{"id":209268,"date":"2024-03-21T14:07:00","date_gmt":"2024-03-21T14:07:00","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e9%9b%bb%e8%8d%b7%e3%83%aa%e3%83%b3%e3%82%b0%e3%81%8b%e3%82%89%e3%81%ae%e9%9b%bb%e5%a0%b4-%e6%a6%82%e5%bf%b5%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95-%e5%bf%9c%e7%94%a8\/"},"modified":"2024-05-17T15:09:48","modified_gmt":"2024-05-17T15:09:48","slug":"%e9%9b%bb%e8%8d%b7%e3%83%aa%e3%83%b3%e3%82%b0%e3%81%8b%e3%82%89%e3%81%ae%e9%9b%bb%e5%a0%b4-%e6%a6%82%e5%bf%b5%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95-%e5%bf%9c%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e9%9b%bb%e8%8d%b7%e3%83%aa%e3%83%b3%e3%82%b0%e3%81%8b%e3%82%89%e3%81%ae%e9%9b%bb%e5%a0%b4-%e6%a6%82%e5%bf%b5%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95-%e5%bf%9c%e7%94%a8\/","title":{"rendered":"\u96fb\u8377\u30ea\u30f3\u30b0\u304b\u3089\u306e\u96fb\u5834 | \u6982\u5ff5\u3001\u8a08\u7b97\u65b9\u6cd5 & \u5fdc\u7528"},"content":{"rendered":"

\u96fb\u8377\u30ea\u30f3\u30b0\u3068\u306f\u3001\u5186\u5f62\u306b\u914d\u7f6e\u3055\u308c\u305f\u96fb\u8377\u306e\u8f2a\u3067\u3042\u308a\u3001\u305d\u306e\u96fb\u5834\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\u3068\u305d\u306e\u5fdc\u7528\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n

\u96fb\u8377\u30ea\u30f3\u30b0\u304b\u3089\u306e\u96fb\u5834<\/h2>\n

\u96fb\u6c17\u3068\u78c1\u6c17\u306e\u5206\u91ce\u306b\u306f\u3001\u96fb\u8377\u5206\u5e03\u304c\u3082\u305f\u3089\u3059\u96fb\u5834\u3092\u8a08\u7b97\u3059\u308b\u69d8\u3005\u306a\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u4e2d\u3067\u3082\u3001\u7279\u306b\u8208\u5473\u6df1\u3044\u30a2\u30d7\u30ed\u30fc\u30c1\u306e\u4e00\u3064\u306b\u3001\u96fb\u8377\u30ea\u30f3\u30b0\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u6982\u5ff5\u3068\u8a08\u7b97\u65b9\u6cd5\u3001\u305d\u3057\u3066\u305d\u306e\u5fdc\u7528\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n

\u96fb\u8377\u30ea\u30f3\u30b0\u306e\u6982\u5ff5<\/h2>\n

\u96fb\u8377\u30ea\u30f3\u30b0\u3068\u306f\u3001\u305d\u306e\u540d\u306e\u901a\u308a\u3001\u5186\u5f62\u306b\u914d\u7f6e\u3055\u308c\u305f\u96fb\u8377\u306e\u8f2a\u3067\u3059\u3002\u30a4\u30e1\u30fc\u30b8\u3068\u3057\u3066\u5186\u5468\u4e0a\u306b\u5bfe\u79f0\u7684\u306b\u914d\u7f6e\u3055\u308c\u305f\u96fb\u8377\u304c\u9023\u7d9a\u7684\u306b\u5b58\u5728\u3059\u308b\u74b0\u72b6\u69cb\u9020\u3092\u8003\u3048\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u306e\u69cb\u9020\u306f\u591a\u304f\u306e\u7269\u7406\u5b9f\u9a13\u3084\u5de5\u5b66\u3067\u898b\u3089\u308c\u308b\u305f\u3081\u3001\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n

\u96fb\u5834\u306e\u8a08\u7b97\u65b9\u6cd5<\/h2>\n

\u96fb\u8377\u30ea\u30f3\u30b0\u304c\u751f\u6210\u3059\u308b\u96fb\u5834\u3092\u8a08\u7b97\u3059\u308b\u969b\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u30b9\u30c6\u30c3\u30d7\u3092\u8e0f\u307f\u307e\u3059\uff1a<\/p>\n

    \n
  1. \u74b0\u4e0a\u306e\u5fae\u5c0f\u306a\u96fb\u8377\u8981\u7d20\u3092\u8003\u3048\u307e\u3059\u3002<\/li>\n
  2. \u500b\u3005\u306e\u5fae\u5c0f\u96fb\u8377\u8981\u7d20\u306b\u3088\u308b\u5fae\u5c0f\u96fb\u5834\u3092\u6c42\u3081\u307e\u3059\u3002<\/li>\n
  3. \u305d\u308c\u3089\u306e\u5fae\u5c0f\u96fb\u5834\u3092\u7a4d\u5206\u3057\u3066\u3001\u5168\u4f53\u306e\u96fb\u5834\u3092\u6c42\u3081\u307e\u3059\u3002<\/li>\n<\/ol>\n

    \u4f8b\u3048\u3070\u3001\u5186\u306e\u4e2d\u5fc3\u304b\u3089\u8ef8\u4e0a\u306e\u4efb\u610f\u306e\u70b9\u306b\u304a\u3051\u308b\u96fb\u5834 \\(E\\) \u3092\u6c42\u3081\u308b\u5834\u5408\u3001\u6b21\u306e\u3088\u3046\u306a\u624b\u9806\u3092\u53d6\u308a\u307e\u3059\uff1a<\/p>\n

    \u8ef8\u4e0a\u306e\u96fb\u5834<\/h3>\n

    \u5186\u306e\u534a\u5f84\u3092 \\(R\\)\u3001\u7dcf\u96fb\u8377\u91cf\u3092 \\(Q\\)\u3001\u8ef8\u4e0a\u306e\u70b9\u304b\u3089\u5186\u306e\u4e2d\u5fc3\u307e\u3067\u306e\u8ddd\u96e2\u3092 \\(z\\) \u3068\u3057\u307e\u3059\u3002<\/p>\n

    \u5fae\u5c0f\u96fb\u8377\u8981\u7d20 \\(dq\\) \u304c\u96fb\u5834 \\(dE\\) \u3092\u751f\u6210\u3057\u307e\u3059\u3002\u30af\u30fc\u30ed\u30f3\u306e\u6cd5\u5247\u3092\u4f7f\u3063\u3066\u5fae\u5c0f\u96fb\u5834\u3092\u6c42\u3081\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n

    \\[
    \ndE = \\frac{k \\cdot dq}{(R^2 + z^2)}
    \n\\]<\/p>\n

    \u3053\u3053\u3067\u3001\\(k\\) \u306f\u30af\u30fc\u30ed\u30f3\u5b9a\u6570\u3067\u3059\u3002\u96fb\u8377\u30ea\u30f3\u30b0\u306e\u5bfe\u79f0\u6027\u3092\u8003\u616e\u3059\u308b\u3068\u3001\u653e\u5c04\u6210\u5206\u306f\u30ad\u30e3\u30f3\u30bb\u30eb\u3057\u3001\u8ef8\u65b9\u5411\u306e\u6210\u5206\u3060\u3051\u304c\u6b8b\u308a\u307e\u3059\u3002<\/p>\n

    \u8ef8\u4e0a\u306e\u96fb\u5834 \\(E\\) \u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n

    \\[
    \nE_z = \\int_0^{2\\pi} \\frac{k \\cdot dq \\cdot z}{(R^2 + z^2)^{3\/2}}
    \n\\]<\/p>\n

    \u3053\u306e\u7a4d\u5206\u3092\u89e3\u304f\u3068\u3001\u6b21\u306e\u3088\u3046\u306b\u7c21\u7565\u5316\u3055\u308c\u307e\u3059\uff1a<\/p>\n

    \\[
    \nE_z = \\frac{kQz}{(R^2 + z^2)^{3\/2}}
    \n\\]<\/p>\n

    \u96fb\u8377\u30ea\u30f3\u30b0\u306e\u5fdc\u7528<\/h2>\n

    \u3053\u306e\u96fb\u8377\u30ea\u30f3\u30b0\u306e\u6982\u5ff5\u3068\u8a08\u7b97\u65b9\u6cd5\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5b9f\u969b\u306e\u5fdc\u7528\u306b\u3082\u5f79\u7acb\u3061\u307e\u3059\uff1a<\/p>\n

      \n
    • \u7c92\u5b50\u52a0\u901f\u5668\uff1a<\/strong>\u7c92\u5b50\u52a0\u901f\u5668\u3067\u306f\u3001\u74b0\u72b6\u306e\u69cb\u9020\u304c\u591a\u304f\u7528\u3044\u3089\u308c\u3001\u9ad8\u30a8\u30cd\u30eb\u30ae\u30fc\u7c92\u5b50\u306e\u8ecc\u9053\u5236\u5fa1\u306b\u96fb\u5834\u304c\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n
    • \u7121\u7dda\u5145\u96fb\u30c7\u30d0\u30a4\u30b9\uff1a<\/strong>\u7121\u7dda\u5145\u96fb\u30d1\u30c3\u30c9\u306b\u306f\u30b3\u30a4\u30eb\u304c\u914d\u7f6e\u3055\u308c\u3001\u96fb\u5834\u3068\u78c1\u5834\u306e\u751f\u6210\u306b\u95a2\u3059\u308b\u539f\u7406\u304c\u5fdc\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n
    • \u8a08\u6e2c\u6a5f\u5668\uff1a<\/strong>\u7279\u5b9a\u306e\u96fb\u5834\u3092\u751f\u6210\u3059\u308b\u305f\u3081\u306e\u8a2d\u8a08\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/li>\n<\/ul>\n

      \u307e\u3068\u3081<\/h2>\n

      \u96fb\u8377\u30ea\u30f3\u30b0\u304b\u3089\u306e\u96fb\u5834\u3092\u7406\u89e3\u3057\u8a08\u7b97\u3059\u308b\u3053\u3068\u306f\u3001\u96fb\u6c17\u3068\u78c1\u6c17\u306e\u5206\u91ce\u306b\u304a\u3051\u308b\u57fa\u790e\u7684\u304b\u3064\u91cd\u8981\u306a\u30b9\u30ad\u30eb\u3067\u3059\u3002\u57fa\u672c\u7684\u306a\u7406\u8ad6\u3092\u5fdc\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u7c92\u5b50\u52a0\u901f\u5668\u3084\u7121\u7dda\u5145\u96fb\u306a\u3069\u306e\u73fe\u5b9f\u4e16\u754c\u306e\u6280\u8853\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002\u305c\u3072\u3001\u3053\u308c\u3089\u306e\u6982\u5ff5\u3092\u3057\u3063\u304b\u308a\u3068\u628a\u63e1\u3057\u3066\u5fdc\u7528\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n

      \u7406\u89e3\u3092\u6df1\u3081\u308b\u305f\u3081\u306b\u3001\u5b9f\u969b\u306b\u8a08\u7b97\u3057\u3066\u307f\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002\u4ed6\u306b\u3082\u3001\u69d8\u3005\u306a\u96fb\u8377\u5206\u5e03\u306b\u3064\u3044\u3066\u5b66\u3076\u3053\u3068\u3067\u3001\u7269\u7406\u5b66\u306e\u5168\u4f53\u50cf\u304c\u898b\u3048\u3066\u304f\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

      \u96fb\u8377\u30ea\u30f3\u30b0\u3068\u306f\u3001\u5186\u5f62\u306b\u914d\u7f6e\u3055\u308c\u305f\u96fb\u8377\u306e\u8f2a\u3067\u3042\u308a\u3001\u305d\u306e\u96fb\u5834\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\u3068\u305d\u306e\u5fdc\u7528\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[96],"tags":[97],"class_list":["post-209268","post","type-post","status-publish","format-standard","hentry","category-96","tag-97","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"\n\u96fb\u8377\u30ea\u30f3\u30b0\u304b\u3089\u306e\u96fb\u5834 | \u6982\u5ff5\u3001\u8a08\u7b97\u65b9\u6cd5 & \u5fdc\u7528<\/title>\n<meta name=\"description\" content=\"\u96fb\u8377\u30ea\u30f3\u30b0\u3068\u306f\u3001\u5186\u5f62\u306b\u914d\u7f6e\u3055\u308c\u305f\u96fb\u8377\u306e\u8f2a\u3067\u3042\u308a\u3001\u305d\u306e\u96fb\u5834\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\u3068\u305d\u306e\u5fdc\u7528\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.electricity-magnetism.org\/ja\/%e9%9b%bb%e8%8d%b7%e3%83%aa%e3%83%b3%e3%82%b0%e3%81%8b%e3%82%89%e3%81%ae%e9%9b%bb%e5%a0%b4-%e6%a6%82%e5%bf%b5%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95-%e5%bf%9c%e7%94%a8\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u96fb\u8377\u30ea\u30f3\u30b0\u304b\u3089\u306e\u96fb\u5834 | \u6982\u5ff5\u3001\u8a08\u7b97\u65b9\u6cd5 & \u5fdc\u7528\" \/>\n<meta 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