{"id":6851,"date":"2025-03-25T17:30:39","date_gmt":"2025-03-25T08:30:39","guid":{"rendered":"https:\/\/torisetudy.com\/?p=6851"},"modified":"2025-03-25T17:30:43","modified_gmt":"2025-03-25T08:30:43","slug":"%e5%b0%8e%e4%bd%93%e3%81%a8%e3%82%ac%e3%82%a6%e3%82%b9%e3%81%ae%e6%b3%95%e5%89%87","status":"publish","type":"post","link":"https:\/\/torisetudy.com\/?p=6851","title":{"rendered":"\u5c0e\u4f53\u3068\u30ac\u30a6\u30b9\u306e\u6cd5\u5247"},"content":{"rendered":"\n<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">\u76ee\u6b21<\/p><ul class=\"toc_list\"><li><a href=\"#i\"><span class=\"toc_number toc_depth_1\">1<\/span> \u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u3092\u3088\u308a\u4e01\u5be7\u306b<\/a><\/li><li><a href=\"#i-2\"><span class=\"toc_number toc_depth_1\">2<\/span> \u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u3068\u5c0e\u4f53<\/a><\/li><\/ul><\/div>\n<h2 class=\"wp-block-heading\"><span id=\"i\">\u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u3092\u3088\u308a\u4e01\u5be7\u306b<\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u3088\u308a\u6b63\u78ba\u306a\u8a71<\/h3>\n\n\n\n<p>$+Q$ \u306e\u96fb\u8377\u304b\u3089 $4\\pi kQ$ \u672c\u306e\u96fb\u6c17\u529b\u7dda\u304c\u6e67\u304d\u51fa\u308b\uff0c\u3068\u3044\u3046\u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u3092\u5b66\u7fd2\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3053\u3061\u3089\u306e\u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u3092\u3088\u308a\u6b63\u78ba\u306b\u8868\u73fe\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u901a\u308a\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n    <div class=\"wp-block-st-blocks-point-box st-point-box has-title post-hashiro-point\" style=\"\n        background-color:#fff; \n        border: 2px solid #ff7f50; \n        padding: 0px 18px; \n        border-radius: 4pt; \n        position: relative;\">\n        \n        <p class=\"st-mybox-title\" style=\"\n            position: absolute; \n            top: -12px; \n            left: 12px; \n            background-color: #fff; \n            padding: 0 10px; \n            color: #ff7f50; \n            font-weight: bold; \n            font-size: 15px; \n            line-height: 1.5; \n            text-decoration: none;\n            margin-bottom: 20px; \n            display: flex; \n            align-items: center; \n            gap: 5px;\">\n            <i class=\"st-fa st-svg-lightbulb-o st-css-no\" aria-hidden=\"true\"><\/i> \u30ac\u30a6\u30b9\u306e\u6cd5\u5247\uff08\u3088\u308a\u6b63\u78ba\u306b\uff09\n        <\/p>\n\n        <div class=\"st-in-point-box\" style=\"\n            margin-top: 0px; \n            margin-bottom: 0px;\n            padding-top: 0px;\n            padding-bottom: 30px;\">\n            <p style=\"margin-bottom: -10px !important;\">\u4efb\u610f\u306e\u9589\u66f2\u9762\u3092\u8cab\u304f\u96fb\u6c17\u529b\u7dda\u306e\u672c\u6570\u306f\uff0c\u9589\u66f2\u9762\u5185\u306b\u5b58\u5728\u3059\u308b\u7dcf\u96fb\u8377\u91cf $Q$ \u3092\u7528\u3044\u3066 $4\\pi kQ$ \u3068\u8868\u3055\u308c\u308b\u3002<\/p>\n        <\/div>\n    <\/div>\n\n\n\n<p>\u300c\u4efb\u610f\u306e\u9589\u66f2\u9762\u3063\u3066\u4f55\u2026??\u300d\u3068\u306a\u3063\u305f\u4eba\u304c\u5927\u534a\u3060\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon1 clearfix\"><div class=\"st-kaiwa-face\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name\">\u7fbd\u767d<\/div><\/div><div class=\"st-kaiwa-area\"><div class=\"st-kaiwa-hukidashi\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u9589\u66f2\u9762\u3068\u306f\u300c\u9589\u3058\u305f\u66f2\u9762\u300d\u3067\u3059\u306e\u3067\uff0c\u5186\u67f1\u3067\u3082\u7403\u3067\u3082\u4f55\u3067\u3082 ok \u3067\u3059\u3002<\/p>\n<\/div><\/div><\/div><\/div>\n\n\n\n<p>\u5177\u4f53\u4f8b\u3092\u901a\u3057\u3066\u5b66\u7fd2\u3057\u305f\u65b9\u304c\u308f\u304b\u308a\u3084\u3059\u3044\u306e\u3067\u3059\u304c\uff0c\u3072\u3068\u307e\u305a\u300c\u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u3092\u4f7f\u3063\u3066\u96fb\u6c17\u529b\u7dda\u3092\u8003\u3048\u308b\u3068\u304d\u306f\uff0c\u7403\u9762\u306e\u3088\u3046\u306b\u5bfe\u79f0\u6027\u306e\u3088\u3044\u9762\u3092\u81ea\u5206\u3067\u4f5c\u3063\u3066\u8003\u3048\u308b\uff01\u300d\u3068\u3044\u3046\u96f0\u56f2\u6c17\u3092\u63b4\u3093\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span id=\"i-2\">\u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u3068\u5c0e\u4f53<\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u91d1\u5c5e\u7403\u306e\u4f8b<\/h3>\n\n\n\n<p>\u534a\u5f84 $R$ \u306e\u91d1\u5c5e\u7403\u306b $+Q$ \u306e\u96fb\u8377\u3092\u4e0e\u3048\u305f\u3068\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u3068\u304d\uff0c\u91d1\u5c5e\u7403\u306e\u4e2d\u5fc3\u304b\u3089\u306e\u8ddd\u96e2\u304c $r$ \u306e\u4f4d\u7f6e\u306e\u96fb\u5834\u306e\u5f37\u3055 $E(r)$ \u3092\u6c42\u3081\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u307e\u305a\u306f\u96fb\u8377\u306e\u5206\u5e03\u306b\u3064\u3044\u3066\u3002\u5c0e\u4f53\u306f\u5185\u90e8\u306b\u96fb\u8377\u304c\u5b58\u5728\u3067\u304d\u306a\u3044\u305f\u3081\uff0c$+Q$ \u306e\u96fb\u8377\u306f\u91d1\u5c5e\u8868\u9762\u306e\u307f\u306b\u5747\u7b49\u306b\u5206\u5e03\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3064\u307e\u308a\uff0c$r=R$ \u306e\u4f4d\u7f6e\u306e\u307f\u306b\u96fb\u8377\u304c\u5b58\u5728\u3059\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"101\" height=\"124\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/\u7269\u7406845.svg\" alt=\"\u7269\u7406845\" class=\"wp-image-6527\"\/><noscript><img decoding=\"async\" width=\"101\" height=\"124\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/\u7269\u7406845.svg\" alt=\"\u7269\u7406845\" class=\"wp-image-6527\"\/><\/noscript><\/figure>\n\n\n\n<p>\u3053\u306e $r=R$ \u306e\u5185\u5074\u3068\u5916\u5074\u3067\u5834\u5408\u5206\u3051\u3092\u3057\u3066\u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u3092\u8003\u3048\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon1 clearfix\"><div class=\"st-kaiwa-face\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name\">\u7fbd\u767d<\/div><\/div><div class=\"st-kaiwa-area\"><div class=\"st-kaiwa-hukidashi\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u300c\u5bfe\u79f0\u7684\u306a\u7403\u9762\u3092\u81ea\u5206\u3067\u4f5c\u3063\u3066\uff0c\u305d\u306e\u5185\u90e8\u306e\u96fb\u8377\u3092\u8003\u3048\u308b\u300d\u3068\u65b9\u91dd\u304c\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n<\/div><\/div><\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">$r&lt;R$ \u306b\u3064\u3044\u3066<\/h3>\n\n\n\n<p>\u534a\u5f84\u304c $r$ \u306e\u7403\u9762\u3092\u4f5c\u3063\u3066\u8003\u3048\u307e\u3059\u3002\u96fb\u8377\u306f $r=R$ \u306e\u4f4d\u7f6e\u306e\u307f\u306b\u5206\u5e03\u3059\u308b\u306e\u3067\uff0c\u3053\u306e\u7403\u9762\u306e\u5185\u90e8\u306b\u542b\u307e\u308c\u308b\u7dcf\u96fb\u8377\u306f $0$ \u3067\u3059\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"153\" height=\"135\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/\u7269\u7406846.svg\" alt=\"\u7269\u7406846\" class=\"wp-image-6528\"\/><noscript><img decoding=\"async\" width=\"153\" height=\"135\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/\u7269\u7406846.svg\" alt=\"\u7269\u7406846\" class=\"wp-image-6528\"\/><\/noscript><\/figure>\n\n\n\n<p>\u3088\u3063\u3066\uff0c\u7403\u9762\u3092\u8cab\u3044\u3066\u3044\u304f\u96fb\u6c17\u529b\u7dda\u306e\u672c\u6570\u306f $0$ \u672c\u3067\u3059\u306e\u3067\uff0c\u7403\u9762\u4e0a\u306e\u96fb\u5834\u306f $0$ \u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3088\u308a\uff0c$E(r)=0$ \u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">$R&lt;r$ \u306b\u3064\u3044\u3066<\/h3>\n\n\n\n<p>\u540c\u69d8\u306b\uff0c\u534a\u5f84\u304c $r$ \u306e\u7403\u9762\u3092\u4f5c\u308a\u307e\u3059\u3002$R&lt;r$ \u306a\u306e\u3067\uff0c$r=R$ \u306e\u4f4d\u7f6e\u306b\u3042\u308b $+Q$ \u306e\u96fb\u8377\u304c\u3059\u3079\u3066\u7403\u9762\u5185\u306b\u542b\u307e\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u3088\u3063\u3066\uff0c\u3053\u306e\u7403\u9762\u3092\u8cab\u304f\u96fb\u6c17\u529b\u7dda\u306e\u7dcf\u6570\u306f $4\\pi kQ$ \u672c\u3067\u3059\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"175\" height=\"167\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/\u7269\u7406847.svg\" alt=\"\u7269\u7406847\" class=\"wp-image-6529\"\/><noscript><img decoding=\"async\" width=\"175\" height=\"167\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/\u7269\u7406847.svg\" alt=\"\u7269\u7406847\" class=\"wp-image-6529\"\/><\/noscript><\/figure>\n\n\n\n<p>$r$ \u306e\u4f4d\u7f6e\u306e\u96fb\u5834\u306e\u5f37\u3055 $E(r)$ \u306f\uff0c\u305d\u306e\u4f4d\u7f6e\u306e\u5358\u4f4d\u9762\u7a4d\u3042\u305f\u308a\u306e\u96fb\u6c17\u529b\u7dda\u306e\u672c\u6570\u3067\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7403\u9762\u306e\u5408\u8a08\u306e\u9762\u7a4d\u306f $4\\pi r^2$ \u3067\u3059\u306e\u3067\uff0c\u7403\u9762\u3092\u8cab\u304f\u5408\u8a08\u306e\u96fb\u6c17\u529b\u7dda\u306f $E(r)\\times 4\\pi r^2$ \u3068\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7d50\u8ad6<\/h3>\n\n\n\n<p>\u4ee5\u4e0a\u304b\u3089\uff0c<br>$$ E(r) \\times 4\\pi r^2 = 4\\pi kQ $$\u3068\u7acb\u5f0f\u3067\u304d\u307e\u3059\u306d\u3002\u3053\u308c\u3092\u6574\u7406\u3059\u308b\u3053\u3068\u3067\uff0c<br>$$ E(r) = k\\Bun{Q}{r^2} $$\u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u70b9\u96fb\u8377\u3068\u306e\u6bd4\u8f03<\/h3>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon1 clearfix\"><div class=\"st-kaiwa-face\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name\">\u7fbd\u767d<\/div><\/div><div class=\"st-kaiwa-area\"><div class=\"st-kaiwa-hukidashi\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u300c\u70b9\u96fb\u8377\u306e\u5834\u5408\u3068\u540c\u3058\u3060\uff01\u300d\u3068\u6c17\u3065\u304d\u307e\u3057\u305f\u304b\u2026\uff1f<\/p>\n<\/div><\/div><\/div><\/div>\n\n\n\n<p>\u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u306b\u304a\u3051\u308b\u7acb\u5f0f\u6642\u306b\u8003\u3048\u308b\u306e\u306f<span class=\"st-mymarker-s-b\">\u300c\u9589\u66f2\u9762\u306e\u5185\u90e8\u306e\u5408\u8a08\u96fb\u8377\u300d<\/span>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u308c\u304c\u70b9\u96fb\u8377\u3067\u3042\u308d\u3046\u304c\uff08\u4e2d\u5fc3\u306b\u307e\u3068\u307e\u3063\u3066\u5b58\u5728\u3057\u3066\u3044\u3088\u3046\u304c\uff09\uff0c\u4eca\u56de\u306e\u3088\u3046\u306b $r=R$ \u306e\u4f4d\u7f6e\u306b\u3042\u308d\u3046\u304c\uff0c\u5408\u8a08\u306e\u96fb\u8377\u304c\u540c\u3058\u3067\u3042\u308c\u3070\u540c\u3058\u7acb\u5f0f\u306b\u306a\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon3 clearfix\"><div class=\"st-kaiwa-area2\"><div class=\"st-kaiwa-hukidashi2\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u91cd\u8981\u306a\u306e\u3067\u7e70\u308a\u8fd4\u3057\u307e\u3059\uff01<\/p>\n<\/div><\/div><\/div><div class=\"st-kaiwa-face2\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u751f\u5f92\uff08\u6319\u624b\uff09.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u751f\u5f92\uff08\u6319\u624b\uff09.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name2\">\u751f\u5f92<\/div><\/div><\/div>\n\n\n\n<p>\u91cd\u8981\u306a\u306e\u306f\u300c\u8003\u3048\u3066\u3044\u308b\u66f2\u9762\uff08\u7403\u9762\uff09\u306e\u5185\u5074\u306e\u5408\u8a08\u96fb\u8377\u300d\u3067\u3059\uff01\u3069\u3053\u306b\u3042\u308b\u304b\u306f\u95a2\u4fc2\u3042\u308a\u307e\u305b\u3093\uff01\u5185\u5074\u306b\u5408\u8a08\u3067\u3069\u308c\u3060\u3051\u96fb\u8377\u304c\u3042\u308b\u304b\uff0c\u306b\u6ce8\u76ee\u3059\u308b\u306e\u304c\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7acb\u5f0f\u624b\u9806\u306e\u307e\u3068\u3081<\/h3>\n\n\n\n<p>\u7acb\u5f0f\u306e\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3082\u307e\u3068\u3081\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002$R&lt;r$ \u306e\u5834\u5408\u3068\u540c\u3058\u3088\u3046\u306b\u8003\u3048\u308b\u3053\u3068\u3067\uff0c\u4ee5\u4e0b\u306e\u901a\u308a\u306b\u7acb\u5f0f\u3059\u308b\u3068\u30b9\u30e0\u30fc\u30ba\u3067\u3059\u3002<\/p>\n\n\n\n<p>$$\\stext{\uff08\u96fb\u5834\u306e\u5f37\u3055\uff09} \\times \\stext{\uff08\u9589\u66f2\u9762\u306e\u9762\u7a4d\uff09} = 4\\pi kQ\\ \\left(=\\bun{Q}{\\varepsilon_0}\\right)$$<\/p>\n\n\n\n    <div class=\"wp-block-st-blocks-point-box st-point-box has-title post-hashiro-point\" style=\"\n        background-color:#fff; \n        border: 2px solid #ff7f50; \n        padding: 0px 18px; \n        border-radius: 4pt; \n        position: relative;\">\n        \n        <p class=\"st-mybox-title\" style=\"\n            position: absolute; \n            top: -12px; \n            left: 12px; \n            background-color: #fff; \n            padding: 0 10px; \n            color: #ff7f50; \n            font-weight: bold; \n            font-size: 15px; \n            line-height: 1.5; \n            text-decoration: none;\n            margin-bottom: 20px; \n            display: flex; \n            align-items: center; \n            gap: 5px;\">\n            <i class=\"st-fa st-svg-lightbulb-o st-css-no\" aria-hidden=\"true\"><\/i> \u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u306e\u7acb\u5f0f\u624b\u9806\n        <\/p>\n\n        <div class=\"st-in-point-box\" style=\"\n            margin-top: 0px; \n            margin-bottom: 0px;\n            padding-top: 0px;\n            padding-bottom: 30px;\">\n            <p style=\"margin-bottom: -10px !important;\">\u2460 \u5bfe\u79f0\u7684\u306a\u66f2\u9762\uff08\u7403\u306a\u3069\uff09\u3092\u81ea\u5206\u3067\u4f5c\u308b\u3002\u3053\u306e\u969b\uff0c\u96fb\u8377\u304c\u5b58\u5728\u3059\u308b\u4f4d\u7f6e\u3067\u5834\u5408\u5206\u3051\u3059\u308b\u3002<\/p><p style=\"margin-bottom: -10px !important;\">\u2461 \u66f2\u9762\u306e\u5185\u90e8\u306b\u5b58\u5728\u3059\u308b\u7dcf\u96fb\u8377\u91cf $Q$ \u3092\u6c42\u3081\u308b\u3002<\/p><p style=\"margin-bottom: -10px !important;\">\u2462 \u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u3068\u3057\u3066\uff0c<\/p><p style=\"margin-bottom: -10px !important;\">$$ \\stext{\uff08\u96fb\u5834\u306e\u5f37\u3055\uff09} \\times \\stext{\uff08\u9589\u66f2\u9762\u306e\u9762\u7a4d\uff09} = 4\\pi kQ $$<\/p><p style=\"margin-bottom: -10px !important;\">\u3068\u7acb\u5f0f\u3059\u308b\u3002<\/p>\n        <\/div>\n    <\/div>\n\n\n\n    <div class=\"wp-block-st-blocks-midashi-box freebox has-title post-hashiro-reidai\" style=\"\n        background-color:#f7f7fb; \n        border-width: 3px; \n        border-color:#a3bded;\">\n        \n        <p class=\"p-free\" style=\"\n            border-color:#a3bded; \n            font-weight: bold;\">\n            <span class=\"p-entry-f\" style=\"\n                color:#ffffff; \n                font-weight: bold; \n                background-color:#a3bded;\">\n                <i class=\"st-fa st-svg-pencil st-css-no\" aria-hidden=\"true\"><\/i> \u4f8b\u984c\n            <\/span>\n        <\/p>\n\n        <div class=\"free-inbox\" style=\"\n            margin-top: 0px; \n            margin-bottom: 0px;\n            padding: 10px 15px;\">\n            <p>\u534a\u5f84 $R$ \u306e\u91d1\u5c5e\u7403\u306b\uff0c$+Q$ \u306e\u96fb\u8377\u3092\u4e0e\u3048\u305f\u3002\u30af\u30fc\u30ed\u30f3\u529b\u306e\u6bd4\u4f8b\u5b9a\u6570\u3092 $k$ \u3068\u3057\u3066\uff0c\u4ee5\u4e0b\u306e\u8a2d\u554f\u306b\u7b54\u3048\u3088\u3002<\/p><p><figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"153\" height=\"120\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/\u7269\u7406848.svg\" alt=\"\u7269\u7406848\" class=\"wp-image-6530\"\/><noscript><img decoding=\"async\" width=\"153\" height=\"120\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/\u7269\u7406848.svg\" alt=\"\u7269\u7406848\" class=\"wp-image-6530\"\/><\/noscript><\/figure><\/p><\/p><p><p class=\"setumonnkakko\">\u7403\u306e\u4e2d\u5fc3 $\\rmO$ \u304b\u3089 $r$ \u306e\u4f4d\u7f6e\u306b\u304a\u3051\u308b\uff0c\u96fb\u5834\u306e\u5f37\u3055 $E(r)$ \u306e\u30b0\u30e9\u30d5\u306e\u6982\u5f62\u3092\u304b\u3051\u3002<\/p><\/p><p><p class=\"setumonnkakko\">\u4f4d\u7f6e $r$ \u306b\u304a\u3051\u308b\u96fb\u4f4d $V(r)$ \u3092\u6c42\u3081\uff0c\u30b0\u30e9\u30d5\u306e\u6982\u5f62\u3092\u304b\u3051\u3002\u305f\u3060\u3057\uff0c\u96fb\u4f4d\u306e\u57fa\u6e96\u306f\u7121\u9650\u9060\u65b9\u306b\u53d6\u308b\u3082\u306e\u3068\u3059\u308b\u3002<\/p><\/p><p><p><\/p>\n        <\/div>\n    <\/div>\n\n\n\n<h3 class=\"wp-block-heading\">(1) \u306e\u89e3\u304d\u65b9<\/h3>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon1 clearfix\"><div class=\"st-kaiwa-face\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name\">\u7fbd\u767d<\/div><\/div><div class=\"st-kaiwa-area\"><div class=\"st-kaiwa-hukidashi\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>$E(r)$ \u306e\u6c42\u3081\u65b9\u306f\u5148\u307b\u3069\u8aac\u660e\u3057\u305f\u901a\u308a\u3067\u3059\u3002<\/p>\n<\/div><\/div><\/div><\/div>\n\n\n\n<p>$r&lt;R$ \u3067\u306f $E(r)=0$\uff0c$R&lt;r$ \u3067\u306f $E(r)=k\\Bun{Q}{r^2}$ \u3067\u3057\u305f\u306d\u3002<\/p>\n\n\n\n<p>$R&lt;r$ \u306e\u96fb\u5834\u306f\u70b9\u96fb\u8377\u5468\u56f2\u306e\u96fb\u5834\u3068\u7b49\u3057\u3044\u305f\u3081\uff0c\u30b0\u30e9\u30d5\u3082\u7b49\u3057\u304f\u306a\u308b\u3053\u3068\u306b\u6ce8\u610f\u3059\u308b\u3068\u6b21\u306e\u3088\u3046\u306a\u6982\u5f62\u3092\u304b\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"164\" height=\"116\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/\u7269\u7406849.svg\" alt=\"\u7269\u7406849\" class=\"wp-image-6531\"\/><noscript><img decoding=\"async\" width=\"164\" height=\"116\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/\u7269\u7406849.svg\" alt=\"\u7269\u7406849\" class=\"wp-image-6531\"\/><\/noscript><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">(2) \u306e\u89e3\u304d\u65b9<\/h3>\n\n\n\n<p>\u7d9a\u3044\u3066\u96fb\u4f4d\u306b\u3064\u3044\u3066\u8003\u3048\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon1 clearfix\"><div class=\"st-kaiwa-face\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name\">\u7fbd\u767d<\/div><\/div><div class=\"st-kaiwa-area\"><div class=\"st-kaiwa-hukidashi\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u3053\u3061\u3089\u3082\u70b9\u96fb\u8377\u306e\u5834\u5408\u3068\u6bd4\u8f03\u3057\u306a\u304c\u3089\u8003\u3048\u3066\u3044\u304f\u3068\u308f\u304b\u308a\u3084\u3059\u3044\u3067\u3059\u3002<\/p>\n<\/div><\/div><\/div><\/div>\n\n\n\n<p>$R&lt;r$ \u306e\u9818\u57df\u3067\u306f\u70b9\u96fb\u8377\u306e\u5834\u5408\u3068\u96fb\u5834\u304c\u5171\u901a\u3067\u3057\u305f\u3002\u96fb\u5834\u304c\u540c\u3058\u3068\u3044\u3046\u3053\u3068\u306f\uff0c$R&lt;r$ \u306e\u9818\u57df\u306b\u304a\u3051\u308b\u96fb\u4f4d $V(r)$ \u306e\u30b0\u30e9\u30d5\u306e\u50be\u304d\u3082\u540c\u3058\u3067\u3059\u3002\u30b0\u30e9\u30d5\u306e\u50be\u304d\u304c\u540c\u3058\u3068\u3044\u3046\u3053\u3068\u306f\uff0c\u30b0\u30e9\u30d5\u306e\u5f62\u3082\u540c\u3058\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u307e\u305f\uff0c\u7121\u9650\u9060\u65b9\u304c\u57fa\u6e96\u3068\u306a\u3063\u3066\u3044\u308b\u70b9\u3082\u5171\u901a\u3067\u3059\u306e\u3067\uff0c$R&lt;r$ \u306b\u304a\u3051\u308b\u96fb\u4f4d\u306e\u30b0\u30e9\u30d5\u3082\u5171\u901a\u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3088\u3063\u3066\uff0c$R&lt;r$ \u3067\u306f $V(r) = k\\Bun{Q}{r}$ \u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon2 clearfix\"><div class=\"st-kaiwa-area2\"><div class=\"st-kaiwa-hukidashi2\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u3067\u306f\uff0c$r&lt;R$ \u306e\u9818\u57df\u306f\u3069\u3046\u3067\u3057\u3087\u3046\u304b\u2026\uff1f<\/p>\n<\/div><\/div><\/div><div class=\"st-kaiwa-face2\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u751f\u5f92\uff08\u7591\u554f\uff09.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u751f\u5f92\uff08\u7591\u554f\uff09.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name2\">\u751f\u5f92<\/div><\/div><\/div>\n\n\n\n<p>\u300c\u91d1\u5c5e\u306e\u5185\u90e8\u306f\u7b49\u96fb\u4f4d\u300d\u3068\u3044\u3046\u6027\u8cea\u304c\u3042\u308a\u307e\u3057\u305f\u306d\u3002$r=R$ \u306e\u4f4d\u7f6e\u306e\u96fb\u4f4d\u306f $V(R) = k\\Bun{Q}{R}$ \u3067\u3059\u306e\u3067\uff0c\u91d1\u5c5e\u5185\u90e8\u306e\u96fb\u4f4d\u306f\u3069\u306e\u5834\u6240\u3067\u3082\u3053\u306e\u5024\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3088\u3063\u3066\uff0c$r&lt;R$ \u306b\u304a\u3044\u3066\u306f\u5e38\u306b $V(r) = k\\Bun{Q}{R}$ \u3068\u306a\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u4ee5\u4e0a\u3092\u307e\u3068\u3081\u308b\u3068\uff0c<br>$$ V(r) =\\begin{cases}\\ k\\bun{Q}{R} &amp; (r&lt;R) \\\\[9pt] \\ k\\bun{Q}{r} &amp; (R&lt;r)\\end{cases}$$\u3067\u3042\u308a\uff0c\u3053\u308c\u3092\u56f3\u793a\u3057\u305f\u30b0\u30e9\u30d5\u306f\u6b21\u306e\u901a\u308a\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"162\" height=\"132\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/\u7269\u7406850.svg\" alt=\"\u7269\u7406850\" class=\"wp-image-6532\"\/><noscript><img decoding=\"async\" width=\"162\" height=\"132\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/\u7269\u7406850.svg\" alt=\"\u7269\u7406850\" class=\"wp-image-6532\"\/><\/noscript><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u6b211 \u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u3092\u3088\u308a\u4e01\u5be7\u306b2 \u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u3068\u5c0e\u4f53 \u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u3092\u3088\u308a\u4e01\u5be7\u306b \u3088\u308a\u6b63\u78ba\u306a\u8a71 $+Q$ \u306e\u96fb\u8377\u304b\u3089 $4\\pi kQ$ \u672c\u306e\u96fb\u6c17\u529b\u7dda\u304c\u6e67\u304d\u51fa\u308b\uff0c\u3068\u3044\u3046\u30ac\u30a6\u30b9\u306e\u6cd5\u5247\u3092\u5b66\u7fd2\u3057\u307e\u3057\u305f\u3002 \u3053 &#8230; <\/p>\n","protected":false},"author":1,"featured_media":6732,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39,23],"tags":[],"class_list":["post-6851","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-39","category-electromagnetics"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/posts\/6851"}],"collection":[{"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6851"}],"version-history":[{"count":11,"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/posts\/6851\/revisions"}],"predecessor-version":[{"id":6862,"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/posts\/6851\/revisions\/6862"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/media\/6732"}],"wp:attachment":[{"href":"https:\/\/torisetudy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6851"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6851"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6851"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}