{"id":7007,"date":"2018-12-26T14:40:42","date_gmt":"2018-12-26T12:40:42","guid":{"rendered":"http:\/\/viewonphysics.gr\/?p=7007"},"modified":"2019-01-06T21:25:17","modified_gmt":"2019-01-06T19:25:17","slug":"%ce%bf-%ce%bd%cf%8c%ce%bc%ce%bf%cf%82-%cf%84%ce%bf%cf%85-coulomb","status":"publish","type":"post","link":"https:\/\/viewonphysics.gr\/?p=7007","title":{"rendered":"\u039f \u039d\u03cc\u03bc\u03bf\u03c2 \u03c4\u03bf\u03c5 Coulomb"},"content":{"rendered":"<p><em>\u0395\u03c0\u03b5\u03b9\u03b4\u03ae \u03bf\u03b9 \u03b2\u03b1\u03c1\u03c5\u03c4\u03b9\u03ba\u03ad\u03c2 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03bc\u03b5\u03bb\u03b7\u03c4\u03ad\u03b5\u03c2 \u03c3\u03b5 \u03c3\u03cd\u03b3\u03ba\u03c1\u03b9\u03c3\u03b7 \u03bc\u03b5 \u03c4\u03b9\u03c2 \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03b9\u03ba\u03ad\u03c2, \u03c3\u03c4\u03b9\u03c2 \u03b1\u03c3\u03ba\u03ae\u03c3\u03b5\u03b9\u03c2 \u03c0\u03bf\u03c5 \u03b1\u03ba\u03bf\u03bb\u03bf\u03c5\u03b8\u03bf\u03cd\u03bd \u03b4\u03b5 \u03b8\u03b1 \u03bb\u03b1\u03bc\u03b2\u03ac\u03bd\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c5\u03c0\u03cc\u03c8\u03b7, \u03b5\u03ba\u03c4\u03cc\u03c2 \u03b1\u03bd \u03b7 \u03ac\u03c3\u03ba\u03b7\u03c3\u03b7 \u03c4\u03bf \u03b6\u03b7\u03c4\u03ac\u03b5\u03b9.<\/em><\/p>\n<ol>\n<li>\u0391\u03bd\u03c4\u03b9\u03c3\u03c4\u03bf\u03af\u03c7\u03b9\u03c3\u03b5 \u03c4\u03bf\u03c5\u03c2 \u03b5\u03c1\u03b5\u03c5\u03bd\u03b7\u03c4\u03ad\u03c2 \u03c4\u03b7\u03c2 \u03b1\u03c1\u03b9\u03c3\u03c4\u03b5\u03c1\u03ae\u03c2 \u03c3\u03c4\u03ae\u03bb\u03b7\u03c2 \u03c4\u03bf\u03c5 \u03c0\u03af\u03bd\u03b1\u03ba\u03b1 \u03bc\u03b5 \u03c4\u03b1 \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03ad\u03c3\u03bc\u03b1\u03c4\u03b1 \u03c4\u03c9\u03bd \u03b5\u03c1\u03b5\u03c5\u03bd\u03ce\u03bd \u03c4\u03bf\u03c5\u03c2 \u03c3\u03c4\u03b7 \u03b4\u03b5\u03be\u03b9\u03ac. \n<table id=\"tablepress-41\" class=\"tablepress tablepress-id-41\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\"><p style=\"text-align: right;\">\u0395\u03c1\u03b5\u03c5\u03bd\u03b7\u03c4\u03ad\u03c2<\/p><\/th><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><th class=\"column-4\">\u0391\u03c0\u03bf\u03c4\u03b5\u03bb\u03ad\u03c3\u03bc\u03b1\u03c4\u03b1<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\"><p style=\"text-align: right;\">Oersted<\/p><\/td><td class=\"column-2\">\u0391<\/td><td class=\"column-3\"><p style=\"text-align: right;\">1<\/p><\/td><td class=\"column-4\">\u0395\u03bd\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b5 \u03c4\u03bf\u03bd \u0397\u03bb\u03b5\u03ba\u03c4\u03c1\u03b9\u03c3\u03bc\u03cc <br> \u03ba\u03b1\u03b9 \u03c4\u03bf \u039c\u03b1\u03b3\u03bd\u03b7\u03c4\u03b9\u03c3\u03bc\u03cc<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\"><p style=\"text-align: right;\">Maxwell<\/p><\/td><td class=\"column-2\">\u0392<\/td><td class=\"column-3\"><p style=\"text-align: right;\">2<\/p><\/td><td class=\"column-4\">\u039c\u03ad\u03c4\u03c1\u03b7\u03c3\u03b5 \u03c4\u03b9\u03c2 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 <br> \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03c9\u03bd \u03c6\u03bf\u03c1\u03c4\u03af\u03c9\u03bd<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\"><p style=\"text-align: right;\">Coulomb<\/p><\/td><td class=\"column-2\">\u0393<\/td><td class=\"column-3\"><p style=\"text-align: right;\">3<\/p><\/td><td class=\"column-4\">\u03a0\u03b1\u03c1\u03b1\u03c4\u03ae\u03c1\u03b7\u03c3\u03b5 \u03c4\u03b9\u03c2 \u03b9\u03b4\u03b9\u03cc\u03c4\u03b7\u03c4\u03b5\u03c2 <br> \u03c4\u03bf\u03c5 \u03ae\u03bb\u03b5\u03ba\u03c4\u03c1\u03bf\u03c5.<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\"><p style=\"text-align: right;\">\u0398\u03b1\u03bb\u03ae\u03c2<\/p><\/td><td class=\"column-2\">\u0394<\/td><td class=\"column-3\"><p style=\"text-align: right;\">4<\/p><\/td><td class=\"column-4\">\u0394\u03b9\u03b1\u03c0\u03af\u03c3\u03c4\u03c9\u03c3\u03b5 \u03cc\u03c4\u03b9 \u03bf \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03b9\u03c3\u03bc\u03cc\u03c2 <br> \u03ba\u03b1\u03b9 \u03bf \u03bc\u03b1\u03b3\u03bd\u03b7\u03c4\u03b9\u03c3\u03bc\u03cc\u03c2 <br> \u03ad\u03c7\u03bf\u03c5\u03bd \u03c3\u03c7\u03ad\u03c3\u03b7 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-41 from cache --><\/li>\n<li>\u0394\u03cd\u03bf \u03b1\u03bd\u03c4\u03af\u03b8\u03b5\u03c4\u03b1 \u03c3\u03b7\u03bc\u03b5\u03b9\u03b1\u03ba\u03ac \u03c6\u03bf\u03c1\u03c4\u03af\u03b1 +q \u03ba\u03b1\u03b9 -q \u03ad\u03bb\u03ba\u03bf\u03bd\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 0,12\u039d. \u0391\u03bd \u03c4\u03b1 \u03c6\u03bf\u03c1\u03c4\u03af\u03b1 \u03b1\u03c5\u03c4\u03ac \u03c4\u03b1 \u03c6\u03ad\u03c1\u03bf\u03c5\u03bc\u03b5 \u03c3\u03c4\u03bf 1\/3 \u03c4\u03b7\u03c2 \u03b1\u03c1\u03c7\u03b9\u03ba\u03ae\u03c2 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2 \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7\u03c2, \u03c4\u03cc\u03c4\u03b5 \u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b8\u03b1 \u03ad\u03bb\u03ba\u03bf\u03bd\u03c4\u03b1\u03b9 \u03b5\u03af\u03bd\u03b1\u03b9:\n<ol>\n<li>0,013\u039d<\/li>\n<li>0,04\u039d<\/li>\n<li>0,036\u039d<\/li>\n<li>1,08\u039d<\/li>\n<\/ol>\n<\/li>\n<li>\u0394\u03cd\u03bf \u03af\u03c3\u03b1 \u03ba\u03b1\u03b9 \u03bf\u03bc\u03cc\u03c3\u03b7\u03bc\u03b1 \u03c3\u03b7\u03bc\u03b5\u03b9\u03b1\u03ba\u03ac \u03c6\u03bf\u03c1\u03c4\u03af\u03b1 +q \u03ba\u03b1\u03b9 +q \u03b1\u03c0\u03c9\u03b8\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 0,4\u039d. \u0391\u03bd \u03b1\u03bd\u03c4\u03b9\u03ba\u03b1\u03c4\u03b1\u03c3\u03c4\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b1 \u03c3\u03b7\u03bc\u03b5\u03b9\u03b1\u03ba\u03ac \u03c6\u03bf\u03c1\u03c4\u03af\u03b1 \u03bc\u03b5 \u03c4\u03b1 \u03b4\u03b9\u03c0\u03bb\u03ac\u03c3\u03b9\u03ac \u03c4\u03bf\u03c5\u03c2, \u03c4\u03cc\u03c4\u03b5 \u03b8\u03b1 \u03b1\u03c0\u03c9\u03b8\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7:\n<ol>\n<li>\u00a00,1\u039d<\/li>\n<li>0,2\u039d<\/li>\n<li>0,8\u039d<\/li>\n<li>1,6\u039d<\/li>\n<\/ol>\n<\/li>\n<li>\u0394\u03cd\u03bf \u03c3\u03b7\u03bc\u03b5\u03b9\u03b1\u03ba\u03ac \u03c6\u03bf\u03c1\u03c4\u03af\u03b1 q<sub>1<\/sub> \u03ba\u03b1\u03b9 q<sub>2<\/sub> \u03b1\u03bb\u03b7\u03bb\u03b5\u03c0\u03b9\u03b4\u03c1\u03bf\u03cd\u03bd \u03bc\u03b5 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 0,2\u039d. \u0391\u03bd \u03b1\u03bd\u03c4\u03b9\u03ba\u03b1\u03c4\u03b1\u03c3\u03c4\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c4\u03bf q<sub>1<\/sub> \u03bc\u03b5 \u03b4\u03b9\u03c0\u03bb\u03ac\u03c3\u03b9\u03bf \u03c6\u03bf\u03c1\u03c4\u03af\u03bf \u03ba\u03b1\u03b9 \u03c4\u03bf q<sub>2<\/sub> \u03bc\u03b5 \u03c4\u03c1\u03b9\u03c0\u03bb\u03ac\u03c3\u03b9\u03bf \u03b5\u03bd\u03ce \u03c4\u03b1 \u03b1\u03c0\u03bf\u03bc\u03b1\u03ba\u03c1\u03cd\u03bd\u03bf\u03c5\u03bc\u03b5 \u03c3\u03b5 \u03b4\u03b9\u03c0\u03bb\u03ac\u03c3\u03b9\u03b1 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03b1\u03c1\u03c7\u03b9\u03ba\u03ae \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2 \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7, \u03c4\u03cc\u03c4\u03b5 \u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03b8\u03b1 \u03b3\u03af\u03bd\u03b5\u03b9:\n<ol>\n<li>0,9\u039d<\/li>\n<li>0,6\u039d<\/li>\n<li>0,4\u039d<\/li>\n<li>0,3\u039d<\/li>\n<\/ol>\n<\/li>\n<li>\u0394\u03cd\u03bf \u03af\u03c3\u03b1 \u03b8\u03b5\u03c4\u03b9\u03ba\u03ac \u03c6\u03bf\u03c1\u03c4\u03b9\u03c3\u03bc\u03ad\u03bd\u03b1 \u03c3\u03b7\u03bc\u03b5\u03b9\u03b1\u03ba\u03ac \u03c6\u03bf\u03c1\u03c4\u03af\u03b1 \u03b1\u03c0\u03c9\u03b8\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 0,36\u039d. \u0393\u03b9\u03b1 \u03bd\u03b1 \u03b1\u03c0\u03c9\u03b8\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03bc\u03b5 0,9\u039d, \u03b8\u03b1 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03b1\u03bd\u03c4\u03b9\u03ba\u03b1\u03c4\u03b1\u03c3\u03c4\u03b1\u03b8\u03bf\u03cd\u03bd \u03b1\u03c0\u03cc \u03b4\u03cd\u03bf \u03c3\u03b7\u03bc\u03b5\u03b9\u03b1\u03ba\u03ac \u03c6\u03bf\u03c1\u03c4\u03af\u03b1 \u03c0\u03bf\u03c5 \u03c4\u03bf \u03ba\u03b1\u03b8\u03ad\u03bd\u03b1 \u03bd\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9:\n<ol>\n<li>+q\/4<\/li>\n<li>+q\/2<\/li>\n<li>+2q<\/li>\n<li>+4q<\/li>\n<\/ol>\n<\/li>\n<li>\u0394\u03cd\u03bf \u03c3\u03b7\u03bc\u03b5\u03b9\u03b1\u03ba\u03ac \u03c6\u03bf\u03c1\u03c4\u03af\u03b1, \u03c0\u03bf\u03c5 \u03b2\u03c1\u03af\u03c3\u03ba\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7 r \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2, \u03b1\u03bb\u03bb\u03b7\u03bb\u03b5\u03c0\u03b9\u03b4\u03c1\u03bf\u03cd\u03bd \u03bc\u03b5 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 0,08\u039d. \u0393\u03b9\u03b1 \u03bd\u03b1 \u03b1\u03bb\u03bb\u03b7\u03bb\u03b5\u03c0\u03b9\u03b4\u03c1\u03bf\u03cd\u03bd \u03bc\u03b5 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 0,32\u039d, \u03b8\u03b1 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03b7 \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2 \u03bd\u03b1 \u03b3\u03af\u03bd\u03b5\u03b9:\n<ol>\n<li>2r<\/li>\n<li>4r<\/li>\n<li>r\/2<\/li>\n<li>r\/4<\/li>\n<\/ol>\n<\/li>\n<li>\u03a4\u03b1 \u03b4\u03b9\u03b1\u03b3\u03c1\u03ac\u03bc\u03bc\u03b1\u03c4\u03b1 \u0391 \u03ba\u03b1\u03b9 \u0392 \u03b5\u03bc\u03c6\u03b1\u03bd\u03af\u03b6\u03bf\u03c5\u03bd \u03c4\u03b7 \u03bc\u03b5\u03c4\u03b1\u03b2\u03bf\u03bb\u03ae \u03c4\u03b7\u03c2 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7\u03c2 Coulomb \u03c3\u03b5 \u03c3\u03c5\u03bd\u03ac\u03c1\u03c4\u03b7\u03c3\u03b7 \u03bc\u03b5 \u03c4\u03b7\u03bd \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7 r \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2. \u0395\u03bd\u03ce \u03c4\u03b1 \u0393 \u03ba\u03b1\u03b9 \u0394 \u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c3\u03b5 \u03c3\u03c5\u03bd\u03ac\u03c1\u03c4\u03b7\u03c3\u03b7 \u03bc\u03b5 \u03c4\u03bf 1\/r<sup>2<\/sup>. \u03a0\u03bf\u03b9\u03b1 \u03b1\u03c0\u03cc \u03c4\u03b1 \u03b4\u03b9\u03b1\u03b3\u03c1\u03ac\u03bc\u03bc\u03b1\u03c4\u03b1 \u03b1\u03c5\u03c4\u03ac \u03b5\u03af\u03bd\u03b1\u03b9 \u03c3\u03c9\u03c3\u03c4\u03ac \u03ba\u03b1\u03b9 \u03c0\u03bf\u03b9\u03b1 \u03bb\u03ac\u03b8\u03bf\u03c2;\n<div id=\"attachment_7041\" style=\"width: 471px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-1.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-7041\" class=\"wp-image-7041\" src=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-1-300x227.jpg\" alt=\"\" width=\"461\" height=\"349\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-1-300x227.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-1-768x580.jpg 768w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-1.jpg 842w\" sizes=\"auto, (max-width: 461px) 100vw, 461px\" \/><\/a><p id=\"caption-attachment-7041\" class=\"wp-caption-text\">\u0386\u03c3\u03ba\u03b7\u03c3\u03b7 7<\/p><\/div>\n<p><!--more--><\/li>\n<li>\u039f\u03b9 \u03b2\u03b1\u03c1\u03c5\u03c4\u03b9\u03ba\u03ad\u03c2 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03c0\u03bf\u03c5 \u03b1\u03bd\u03b1\u03c0\u03c4\u03cd\u03c3\u03c3\u03bf\u03bd\u03c4\u03b1\u03b9 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03b4\u03cd\u03bf \u03bc\u03b1\u03b6\u03ce\u03bd m<sub>1<\/sub> \u03ba\u03b1\u03b9 m<sub>2<\/sub> \u03c5\u03c0\u03bf\u03bb\u03bf\u03b3\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03bf \u039d\u03cc\u03bc\u03bf \u03c4\u03b7\u03c2 \u03a0\u03b1\u03b3\u03ba\u03cc\u03c3\u03bc\u03b9\u03b1\u03c2 \u0388\u03bb\u03be\u03b7\u03c2 \u03c4\u03bf\u03c5 \u039d\u03b5\u03cd\u03c4\u03c9\u03bd\u03b1, \u03bc\u03b5\u00a0 \u03b2\u03ac\u03c3\u03b7 \u03c4\u03b7 \u03c3\u03c7\u03ad\u03c3\u03b7  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/viewonphysics.gr\/wp-content\/ql-cache\/quicklatex.com-a727ca833488c6fbf5ff10ca827dcc1e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#70;&#61;&#71;&#32;&#92;&#102;&#114;&#97;&#99;&#123;&#109;&#95;&#49;&#32;&#92;&#99;&#100;&#111;&#116;&#32;&#109;&#95;&#50;&#125;&#123;&#114;&#94;&#50;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"95\" style=\"vertical-align: -7px;\"\/>, \u03cc\u03c0\u03bf\u03c5 r \u03b7 \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03c9\u03bd \u03bc\u03b1\u03b6\u03ce\u03bd \u03ba\u03b1\u03b9 G \u03b7 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ac \u03c4\u03b7\u03c2 \u03c0\u03b1\u03b3\u03ba\u03cc\u03c3\u03bc\u03b9\u03b1\u03c2 \u03ad\u03bb\u03be\u03b7\u03c2 \u03bc\u03b5 \u03c4\u03b9\u03bc\u03ae <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/viewonphysics.gr\/wp-content\/ql-cache\/quicklatex.com-60144b7e40a0167c3a0c3200577f6fc7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#54;&#44;&#54;&#55;&#32;&#92;&#99;&#100;&#111;&#116;&#32;&#49;&#48;&#94;&#123;&#45;&#49;&#49;&#125;&#78;&#109;&#94;&#50;&#47;&#107;&#103;&#94;&#50;\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"164\" style=\"vertical-align: -5px;\"\/>\u00a0 .\n<ol>\n<li>\u03a5\u03c0\u03bf\u03bb\u03cc\u03b3\u03b9\u03c3\u03b5 \u03c4\u03b7 \u03b2\u03b1\u03c1\u03c5\u03c4\u03b9\u03ba\u03ae \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03b4\u03cd\u03bf \u03bc\u03b1\u03b6\u03ce\u03bd m<sub>1<\/sub> \u03ba\u03b1\u03b9 m<sub>2<\/sub> \u03b1\u03c0\u03cc 1kg \u03b7 \u03ba\u03ac\u03b8\u03b5 \u03bc\u03af\u03b1, \u03cc\u03c4\u03b1\u03bd \u03b2\u03c1\u03b5\u03b8\u03bf\u03cd\u03bd \u03c3\u03b5 \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7 1m \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2.<\/li>\n<li>\u03a5\u03c0\u03bf\u03bb\u03cc\u03b3\u03b9\u03c3\u03b5 \u03c4\u03b7\u03bd \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03b9\u03ba\u03ae \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 Coulomb \u03c0\u03bf\u03c5 \u03b1\u03bd\u03b1\u03c0\u03c4\u03cd\u03c3\u03c3\u03b5\u03c4\u03b1\u03b9 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03b4\u03cd\u03bf \u03af\u03c3\u03c9\u03bd \u03c3\u03b7\u03bc\u03b5\u03b9\u03b1\u03ba\u03ce\u03bd \u03c6\u03bf\u03c1\u03c4\u03af\u03c9\u03bd \u03b1\u03c0\u03cc 1C \u03c4\u03bf \u03ba\u03b1\u03b8\u03ad\u03bd\u03b1, \u03cc\u03c4\u03b1\u03bd \u03b2\u03c1\u03b5\u03b8\u03bf\u03cd\u03bd \u03b5\u03c0\u03af\u03c3\u03b7\u03c2 \u03c3\u03b5 \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7 1m \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2.<\/li>\n<li>\u03a3\u03cd\u03b3\u03ba\u03c1\u03b9\u03bd\u03b5 \u03c4\u03b9\u03c2 \u03b4\u03cd\u03bf \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03c0\u03bf\u03c5 \u03c5\u03c0\u03bf\u03bb\u03cc\u03b3\u03b9\u03c3\u03b5\u03c2 \u03c3\u03c4\u03b1 \u03b4\u03cd\u03bf \u03c0\u03c1\u03bf\u03b7\u03b3\u03bf\u03cd\u03bc\u03b5\u03bd\u03b1 \u03b5\u03c1\u03c9\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03c3\u03c7\u03bf\u03bb\u03af\u03b1\u03c3\u03b5 \u03c4\u03bf \u03b1\u03c0\u03bf\u03c4\u03ad\u03bb\u03b5\u03c3\u03bc\u03b1 \u03c4\u03b7\u03c2 \u03c3\u03cd\u03b3\u03ba\u03c1\u03b9\u03c3\u03b7\u03c2.<\/li>\n<\/ol>\n<\/li>\n<li>\u0394\u03b9\u03b1\u03b8\u03ad\u03c4\u03bf\u03c5\u03bc\u03b5 \u03b4\u03cd\u03bf \u03bc\u03b9\u03ba\u03c1\u03ad\u03c2 \u03cc\u03bc\u03bf\u03b9\u03b5\u03c2 \u03bc\u03b5\u03c4\u03b1\u03bb\u03bb\u03b9\u03ba\u03ad\u03c2 \u03c3\u03c6\u03b1\u03af\u03c1\u03b5\u03c2 \u03b5\u03ba \u03c4\u03c9\u03bd \u03bf\u03c0\u03bf\u03af\u03c9\u03bd \u03b7 \u03bc\u03af\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c6\u03bf\u03c1\u03c4\u03b9\u03c3\u03bc\u03ad\u03bd\u03b7 \u03bc\u03b5 \u03c6\u03bf\u03c1\u03c4\u03af\u03bf -6\u03bcC \u03ba\u03b1\u03b9 \u03b7 \u03ac\u03bb\u03bb\u03b7 \u03b1\u03c6\u03cc\u03c1\u03c4\u03b9\u03c3\u03c4\u03b7. \u03a4\u03b9\u03c2 \u03c6\u03ad\u03c1\u03bd\u03bf\u03c5\u03bc\u03b5 \u03c3\u03b5 \u03b5\u03c0\u03b1\u03c6\u03ae \u03ba\u03b1\u03b9 \u03ba\u03b1\u03c4\u03cc\u03c0\u03b9\u03bd \u03c4\u03b9\u03c2 \u03b1\u03c0\u03bf\u03bc\u03b1\u03ba\u03c1\u03cd\u03bd\u03bf\u03c5\u03bc\u03b5 \u03c3\u03b5 \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7 30cm \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2. \u039c\u03b5 \u03c0\u03cc\u03c3\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03b8\u03b1 \u03b1\u03bb\u03bb\u03b7\u03bb\u03b5\u03c0\u03b9\u03b4\u03c1\u03bf\u03cd\u03bd \u03c3\u03c4\u03b7\u03bd \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7 \u03b1\u03c5\u03c4\u03ae;<\/li>\n<li>\u0391\u03bd \u03b4\u03cd\u03bf \u03c6\u03bf\u03c1\u03c4\u03af\u03b1 \u03b1\u03c0\u03cc 3nC \u03c4\u03bf \u03ba\u03b1\u03b8\u03ad\u03bd\u03b1, \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03b7\u03b8\u03bf\u03cd\u03bd \u03c3\u03b5 \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7 1cm \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2, \u03bc\u03b5 \u03c0\u03cc\u03c3\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03b8\u03b1 \u03b1\u03c0\u03c9\u03b8\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9;<\/li>\n<li>\u03a4\u03b1 \u03c6\u03bf\u03c1\u03c4\u03af\u03b1 q<sub>1<\/sub>=4\u03bcC \u03ba\u03b1\u03b9 q<sub>2<\/sub>=9\u03bcC \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b1 \u03c3\u03b7\u03bc\u03b5\u03af\u03b1 \u03c4\u03c9\u03bd \u03b1\u03be\u03cc\u03bd\u03c9\u03bd x \u03ba\u03b1\u03b9 y \u03c0\u03bf\u03c5 \u03b1\u03bd\u03b1\u03b3\u03c1\u03ac\u03c6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7\u03bd \u03b5\u03b9\u03ba\u03cc\u03bd\u03b1. \u03a5\u03c0\u03bf\u03bb\u03bf\u03b3\u03af\u03c3\u03c4\u03b5 \u03ba\u03b1\u03b9 \u03c3\u03c7\u03b5\u03b4\u03b9\u03ac\u03c3\u03c4\u03b5 \u03c4\u03b9\u03c2 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 Coulomb \u03c0\u03bf\u03c5 \u03b1\u03bb\u03bb\u03b7\u03bb\u03b5\u03c0\u03b9\u03b4\u03c1\u03bf\u03cd\u03bd.\n<p><div id=\"attachment_7053\" style=\"width: 408px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-3.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-7053\" class=\"alignnone wp-image-7053\" src=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-3-300x244.jpg\" alt=\"\" width=\"398\" height=\"324\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-3-300x244.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-3.jpg 689w\" sizes=\"auto, (max-width: 398px) 100vw, 398px\" \/><\/a><p id=\"caption-attachment-7053\" class=\"wp-caption-text\">\u0386\u03c3\u03ba\u03b7\u03c3\u03b7 11<\/p><\/div><\/li>\n<li>\u03a0\u03cc\u03c3\u03bf \u03c6\u03bf\u03c1\u03c4\u03af\u03bf \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c3\u03b5 \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7 3cm \u03b1\u03c0\u03cc \u03ac\u03bb\u03bb\u03bf \u03c6\u03bf\u03c1\u03c4\u03af\u03bf 20nC, \u03ce\u03c3\u03c4\u03b5 \u03bd\u03b1 \u03c4\u03bf \u03ad\u03bb\u03be\u03b5\u03b9 \u03bc\u03b5 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 0,1\u039d;<\/li>\n<li>\u03a6\u03bf\u03c1\u03c4\u03af\u03bf Q=4,2\u03bcC \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03b5\u03af\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7\u03bd \u03b1\u03c1\u03c7\u03ae \u039f \u03c4\u03bf\u03c5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf\u03c5 \u03ac\u03be\u03bf\u03bd\u03b1. \u0391\u03bd \u03b8\u03ad\u03bb\u03bf\u03c5\u03bc\u03b5 \u03bd\u03b1 \u03b1\u03c3\u03ba\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c3\u03c4\u03bf Q \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/viewonphysics.gr\/wp-content\/ql-cache\/quicklatex.com-59ee071910bd7032bea29d1d8bfd75f2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#54;&#44;&#56;&#32;&#92;&#116;&#105;&#109;&#101;&#115;&#32;&#49;&#48;&#94;&#123;&#45;&#54;&#125;&#78;\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"99\" style=\"vertical-align: -4px;\"\/> \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b7\u03bd \u03ba\u03b1\u03c4\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 +x, \u03bc\u03b5 \u03c4\u03b7\u03bd \u03b5\u03c0\u03af\u03b4\u03c1\u03b1\u03c3\u03b7 \u03b5\u03bd\u03cc\u03c2 \u03b8\u03b5\u03c4\u03b9\u03ba\u03bf\u03cd \u03c6\u03bf\u03c1\u03c4\u03af\u03bf\u03c5 0,18\u03bcC, \u03c0\u03bf\u03cd \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03b7\u03b8\u03b5\u03af \u03c4\u03bf \u03c6\u03bf\u03c1\u03c4\u03af\u03bf \u03b1\u03c5\u03c4\u03cc;<\/li>\n<li>\u0394\u03cd\u03bf \u03c0\u03c1\u03c9\u03c4\u03cc\u03bd\u03b9\u03b1 (p) \u03ba\u03b1\u03b9 \u03ad\u03bd\u03b1 \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03cc\u03bd\u03b9o \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03b7\u03bc\u03ad\u03bd\u03b1 \u03c3\u03c4\u03bf \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf \u03ac\u03be\u03bf\u03bd\u03b1 x \u03c3\u03b5 \u03b1\u03c0\u03bf\u03c3\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 d \u03ba\u03b1\u03b9 D \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2, \u03cc\u03c0\u03c9\u03c2 \u03c6\u03b1\u03af\u03bd\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7\u03bd \u03b5\u03b9\u03ba\u03cc\u03bd\u03b1. \u03a3\u03c7\u03b5\u03b4\u03af\u03b1\u03c3\u03b5,\u03c7\u03c9\u03c1\u03af\u03c2 \u03c5\u03c0\u03bf\u03bb\u03bf\u03b3\u03b9\u03c3\u03bc\u03bf\u03cd\u03c2, \u03c3\u03c4\u03bf \u03b5\u03bd\u03b4\u03b9\u03ac\u03bc\u03b5\u03c3\u03bf \u03c0\u03c1\u03c9\u03c4\u03cc\u03bd\u03b9\u03bf:\n<ol>\n<li>\u03a4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b4\u03ad\u03c7\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03bf \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03cc\u03bd\u03b9\u03bf.<\/li>\n<li>\u03a4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b4\u03ad\u03c7\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03bf \u03ac\u03bb\u03bb\u03bf \u03c0\u03c1\u03c9\u03c4\u03cc\u03bd\u03b9\u03bf.<\/li>\n<li>\u03a4\u03b7 \u03c3\u03c5\u03bd\u03b9\u03c3\u03c4\u03b1\u03bc\u03ad\u03bd\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7.<\/li>\n<\/ol>\n<p><div id=\"attachment_7067\" style=\"width: 432px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-5.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-7067\" class=\" wp-image-7067\" src=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-5-300x64.jpg\" alt=\"\" width=\"422\" height=\"90\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-5-300x64.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-5-768x165.jpg 768w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-5.jpg 933w\" sizes=\"auto, (max-width: 422px) 100vw, 422px\" \/><\/a><p id=\"caption-attachment-7067\" class=\"wp-caption-text\">\u0386\u03c3\u03ba\u03b7\u03c3\u03b7 14<\/p><\/div><\/li>\n<li>\u03a3\u03c4\u03bf \u03c3\u03c7\u03ae\u03bc\u03b1 \u03c4\u03b1 \u03c6\u03bf\u03c1\u03c4\u03af\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 q<sub>1<\/sub>=20\u03bcC, q<sub>2<\/sub>=4\u03bcC \u03ba\u03b1\u03b9 q<sub>3<\/sub>=12\u03bcC. \u03a5\u03c0\u03bf\u03bb\u03cc\u03b3\u03b9\u03c3\u03b5 \u03c4\u03b7 \u03c3\u03c5\u03bd\u03b9\u03c3\u03c4\u03b1\u03bc\u03ad\u03bd\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b1\u03c3\u03ba\u03b5\u03af\u03c4\u03b1\u03b9 \u03c3\u03c4\u03bf q<sub>2<\/sub>.\n<p><div id=\"attachment_7049\" style=\"width: 425px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-2.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-7049\" class=\"wp-image-7049\" src=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-2-300x60.jpg\" alt=\"\" width=\"415\" height=\"83\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-2-300x60.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-2.jpg 735w\" sizes=\"auto, (max-width: 415px) 100vw, 415px\" \/><\/a><p id=\"caption-attachment-7049\" class=\"wp-caption-text\">\u0386\u03c3\u03ba\u03b7\u03c3\u03b7 15<\/p><\/div><\/li>\n<li>\u0394\u03b9\u03b1\u03b8\u03ad\u03c4\u03bf\u03c5\u03bc\u03b5 \u03c3\u03c9\u03bc\u03b1\u03c4\u03af\u03b4\u03b9\u03bf \u03bc\u03b5 \u03c6\u03bf\u03c1\u03c4\u03af\u03bf q=2\u03bcC. \u03a0\u03cc\u03c3\u03bf \u03b8\u03b1 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03bf \u03c6\u03bf\u03c1\u03c4\u03af\u03bf Q \u03c0\u03bf\u03c5 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c3\u03b5 \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7 d=3cm \u03ba\u03ac\u03c4\u03c9 \u03b1\u03c0\u03cc \u03c4\u03bf q \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b7\u03bd \u03af\u03b4\u03b9\u03b1 \u03ba\u03b1\u03c4\u03b1\u03ba\u03cc\u03c1\u03c5\u03c6\u03b7, \u03ce\u03c3\u03c4\u03b5 \u03b1\u03c5\u03c4\u03cc \u03bd\u03b1 \u03b9\u03c3\u03bf\u03c1\u03c1\u03bf\u03c0\u03ae\u03c3\u03b5\u03b9 \u03b1\u03bd \u03c4\u03bf \u03b1\u03c6\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03b5\u03bb\u03b5\u03cd\u03b8\u03b5\u03c1\u03bf; \u0394\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03b7 \u03bc\u03ac\u03b6\u03b1 \u03c4\u03bf\u03c5 q m=1g \u03ba\u03b1\u03b9 g=10m\/s<sup>2<\/sup>.\n<p><div id=\"attachment_7084\" style=\"width: 174px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-7.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-7084\" class=\" wp-image-7084\" src=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-7-155x300.jpg\" alt=\"\" width=\"164\" height=\"317\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-7-155x300.jpg 155w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-7.jpg 291w\" sizes=\"auto, (max-width: 164px) 100vw, 164px\" \/><\/a><p id=\"caption-attachment-7084\" class=\"wp-caption-text\">\u0386\u03c3\u03ba\u03b7\u03c3\u03b7 16<\/p><\/div><\/li>\n<li>\u03a3\u03c4\u03b7\u03bd \u03b1\u03c1\u03c7\u03ae \u039f \u03c4\u03bf\u03c5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf\u03c5 \u03ac\u03be\u03bf\u03bd\u03b1 x, \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03bf\u03cd\u03bc\u03b5 \u03c6\u03bf\u03c1\u03c4\u03af\u03bf q \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b7 \u03b8\u03ad\u03c3\u03b7 x=L \u03c6\u03bf\u03c1\u03c4\u03af\u03bf Q=-4q. \u0395\u03be\u03ad\u03c4\u03b1\u03c3\u03b5 \u03c3\u03b5 \u03c0\u03bf\u03b9\u03b1\/\u03b5\u03c2 \u03c0\u03b5\u03c1\u03b9\u03bf\u03c7\u03ae\/\u03c7\u03ad\u03c2 \u03b1\u03c0\u03cc \u03c4\u03b9\u03c2 \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03b8\u03b1 \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03c3\u03b5 \u03bd\u03b1 \u03b9\u03c3\u03bf\u03c1\u03c1\u03bf\u03c0\u03ae\u03c3\u03b5\u03b9 \u03ad\u03bd\u03b1 \u03c0\u03c1\u03c9\u03c4\u03cc\u03bd\u03b9\u03bf, \u03b1\u03bd \u03c4\u03bf \u03b1\u03c6\u03ae\u03bd\u03b1\u03bc\u03b5 \u03b5\u03bb\u03b5\u03cd\u03b8\u03b5\u03c1\u03bf. \u0393\u03b9\u03b1:\n<ol>\n<li>x&lt;0<\/li>\n<li>0&lt;x&lt;L<\/li>\n<li>x&gt;L<\/li>\n<\/ol>\n<div id=\"attachment_7106\" style=\"width: 441px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-6-1.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-7106\" class=\" wp-image-7106\" src=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-6-1-300x53.jpg\" alt=\"\" width=\"431\" height=\"76\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-6-1-300x53.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-6-1-768x137.jpg 768w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2018\/12\/Coulomb-6-1.jpg 931w\" sizes=\"auto, (max-width: 431px) 100vw, 431px\" \/><\/a><p id=\"caption-attachment-7106\" class=\"wp-caption-text\">\u0386\u03c3\u03ba\u03b7\u03c3\u03b7 17<\/p><\/div>\n<p>\u0395\u03be\u03ad\u03c4\u03b1\u03c3\u03b5 \u03c4\u03b1 \u03b5\u03c1\u03c9\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1 \u03c4\u03b7\u03c2 \u03ac\u03c3\u03ba\u03b7\u03c3\u03b7\u03c2 \u03c3\u03c4\u03b7\u03bd \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 \u03c0\u03bf\u03c5 \u03c3\u03c4\u03b7 \u03b8\u03ad\u03c3\u03b7 x=L \u03b2\u03ac\u03bb\u03bf\u03c5\u03bc\u03b5 \u03c6\u03bf\u03c1\u03c4\u03af\u03bf +4q.<br \/>\n\u03a4\u03ad\u03bb\u03bf\u03c2, \u03b4\u03b5\u03c2 \u03b1\u03bd \u03c3\u03c4\u03b9\u03c2 \u03b8\u03ad\u03c3\u03b5\u03b9\u03c2 \u03c0\u03bf\u03c5 \u03b2\u03c1\u03ae\u03ba\u03b5\u03c2, \u03b7 \u03b9\u03c3\u03bf\u03c1\u03c1\u03bf\u03c0\u03af\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 <em>\u03b1\u03c3\u03c4\u03b1\u03b8\u03ae\u03c2 \u03ae\u00a0 \u03b5\u03c5\u03c3\u03c4\u03b1\u03b8\u03ae\u03c2. <\/em>\u0394\u03b7\u03bb\u03b1\u03b4\u03ae, \u03b1\u03bd \u03bc\u03b5\u03c4\u03b1\u03c4\u03bf\u03c0\u03af\u03c3\u03bf\u03c5\u03bc\u03b5 \u03bb\u03af\u03b3\u03bf \u03c4\u03bf \u03c0\u03c1\u03c9\u03c4\u03cc\u03bd\u03b9\u03bf \u03b1\u03c0\u03cc \u03c4\u03b7 \u03b8\u03ad\u03c3\u03b7 \u03b9\u03c3\u03bf\u03c1\u03c1\u03bf\u03c0\u03af\u03b1\u03c2 \u03c4\u03bf\u03c5, \u03b8\u03b1 \u03b1\u03c0\u03bf\u03bc\u03b1\u03ba\u03c1\u03c5\u03bd\u03b8\u03b5\u03af (\u03b1\u03c3\u03c4\u03b1\u03b8\u03ae\u03c2) \u03ae \u03b8\u03b1 \u03b5\u03c0\u03b1\u03bd\u03ad\u03bb\u03b8\u03b5\u03b9 (\u03b5\u03c5\u03c3\u03c4\u03b1\u03b8\u03ae\u03c2) \u03c3&#8217; \u03b1\u03c5\u03c4\u03ae\u03bd.<\/li>\n<li>\u00a0\u0395\u03c6\u03ac\u03c1\u03bc\u03bf\u03c3\u03b5 \u03c4\u03b1 \u03b5\u03c5\u03c1\u03ae\u03bc\u03b1\u03c4\u03b1 \u03c4\u03b7\u03c2 \u03c0\u03c1\u03bf\u03b7\u03b3\u03bf\u03cd\u03bc\u03b5\u03bd\u03b7\u03c2 \u03ac\u03c3\u03ba\u03b7\u03c3\u03b7\u03c2 \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03c5\u03c0\u03bf\u03bb\u03bf\u03b3\u03af\u03c3\u03b5\u03b9\u03c2 \u03c3\u03b5 \u03c0\u03bf\u03b9\u03b1 \u03b1\u03ba\u03c1\u03b9\u03b2\u03ce\u03c2 \u03b8\u03ad\u03c3\u03b7 (\u03b3\u03b9\u03b1 \u03c0\u03bf\u03b9\u03bf x) \u03b8\u03b1 \u03b9\u03c3\u03bf\u03c1\u03c1\u03bf\u03c0\u03ae\u03c3\u03b5\u03b9 \u03c4\u03bf \u03c0\u03c1\u03c9\u03c4\u03cc\u03bd\u03b9\u03bf \u03c3\u03c4\u03b9\u03c2 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