{"id":209258,"date":"2024-03-21T14:06:57","date_gmt":"2024-03-21T14:06:57","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e3%83%ac%e3%83%bc%e3%82%b6%e3%83%bc%e5%a2%97%e5%b9%85%e5%85%ac%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%83%bb%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%83%bb%e5%88%a9%e7%94%a8\/"},"modified":"2024-05-17T15:09:41","modified_gmt":"2024-05-17T15:09:41","slug":"%e3%83%ac%e3%83%bc%e3%82%b6%e3%83%bc%e5%a2%97%e5%b9%85%e5%85%ac%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%83%bb%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%83%bb%e5%88%a9%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e3%83%ac%e3%83%bc%e3%82%b6%e3%83%bc%e5%a2%97%e5%b9%85%e5%85%ac%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%83%bb%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%83%bb%e5%88%a9%e7%94%a8\/","title":{"rendered":"\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u516c\u5f0f | \u89e3\u8aac\u30fb\u8a08\u7b97\u65b9\u6cd5\u30fb\u5229\u7528"},"content":{"rendered":"

\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u306e\u539f\u7406\u3001\u57fa\u672c\u516c\u5f0f\u3001\u8a08\u7b97\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3001\u901a\u4fe1\u3001\u533b\u7642\u3001\u7814\u7a76\u5206\u91ce\u3067\u306e\u5177\u4f53\u7684\u306a\u5229\u7528\u4f8b\u3092\u7d39\u4ecb\u3059\u308b\u8a18\u4e8b\u3067\u3059\u3002<\/p>\n

\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u516c\u5f0f | \u89e3\u8aac\u30fb\u8a08\u7b97\u65b9\u6cd5\u30fb\u5229\u7528<\/h2>\n

1. \u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u3068\u306f\uff1f<\/h2>\n

\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u3068\u306f\u3001\u30ec\u30fc\u30b6\u30fc\u5149\u306e\u5f37\u5ea6\u3084\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u5897\u52a0\u3055\u305b\u308b\u6280\u8853\u3067\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u901a\u5e38\u30ec\u30fc\u30b6\u30fc\u5a92\u8cea\u3068\u547c\u3070\u308c\u308b\u6750\u6599\u3092\u901a\u904e\u3059\u308b\u5149\u306e\u76f8\u4e92\u4f5c\u7528\u306b\u3088\u3063\u3066\u884c\u308f\u308c\u307e\u3059\u3002\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u306f\u3001\u901a\u4fe1\u3001\u533b\u7642\u3001\u7814\u7a76\u958b\u767a\u306a\u3069\u591a\u304f\u306e\u5206\u91ce\u3067\u5e45\u5e83\u304f\u5229\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

2. \u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u306e\u57fa\u672c\u7684\u306a\u4ed5\u7d44\u307f<\/h2>\n

\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u306f\u3001\u5149\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u30ec\u30fc\u30b6\u30fc\u5a92\u8cea\u306e\u4e2d\u3067\u52b1\u8d77\u3055\u308c\u305f\u7269\u8cea\u3068\u76f8\u4e92\u4f5c\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u884c\u308f\u308c\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u8a73\u3057\u304f\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff1a<\/p>\n

1. **\u52b1\u8d77**\uff1a\u5916\u90e8\u304b\u3089\u30a8\u30cd\u30eb\u30ae\u30fc\uff08\u96fb\u6c17\u3001\u5149\u306a\u3069\uff09\u3092\u4f9b\u7d66\u3055\u308c\u3001\u30ec\u30fc\u30b6\u30fc\u5a92\u8cea\u5185\u306e\u539f\u5b50\u3084\u5206\u5b50\u304c\u9ad8\u3044\u30a8\u30cd\u30eb\u30ae\u30fc\u72b6\u614b\u306b\u52b1\u8d77\u3055\u308c\u307e\u3059\u3002
\n2. **\u8a98\u5c0e\u653e\u51fa**\uff1a\u52b1\u8d77\u72b6\u614b\u306b\u3042\u308b\u7c92\u5b50\u306f\u3001\u5165\u5c04\u5149\uff08\u30ec\u30fc\u30b6\u30fc\uff09\u3068\u76f8\u4e92\u4f5c\u7528\u3057\u3001\u81ea\u3089\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u653e\u51fa\u3057\u307e\u3059\u3002\u3053\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u306f\u540c\u3058\u4f4d\u76f8\u3068\u65b9\u5411\u3092\u6301\u3064\u30ec\u30fc\u30b6\u30fc\u5149\u3068\u3057\u3066\u653e\u51fa\u3055\u308c\u307e\u3059\u3002
\n3. **\u5897\u5e45**\uff1a\u653e\u51fa\u3055\u308c\u305f\u5149\u306f\u66f4\u306a\u308b\u52b1\u8d77\u7c92\u5b50\u3068\u76f8\u4e92\u4f5c\u7528\u3057\u3001\u5149\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u5897\u5e45\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u9023\u9396\u53cd\u5fdc\u306b\u3088\u308a\u3001\u6700\u7d42\u7684\u306a\u30ec\u30fc\u30b6\u30fc\u306e\u5f37\u5ea6\u304c\u8457\u3057\u304f\u5897\u52a0\u3057\u307e\u3059\u3002<\/p>\n

3. \u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u516c\u5f0f<\/h2>\n

\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u306e\u57fa\u672c\u516c\u5f0f\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n

\\[
\nI = I_0 e^{gL}
\n\\]<\/p>\n

\u3053\u3053\u3067\u3001<\/p>\n

– \\( I \\) \u306f\u51fa\u529b\u5f37\u5ea6\u3001
\n– \\( I_0 \\) \u306f\u5165\u529b\u5f37\u5ea6\u3001
\n– \\( g \\) \u306f\u30b2\u30a4\u30f3\u4fc2\u6570\uff08\u5358\u4f4d\u9577\u3042\u305f\u308a\u306e\u5897\u5e45\u7387\uff09\u3001
\n– \\( L \\) \u306f\u5897\u5e45\u5a92\u8cea\u306e\u9577\u3055\u3067\u3059\u3002<\/p>\n

\u3053\u306e\u516c\u5f0f\u306f\u3001\u5165\u529b\u30ec\u30fc\u30b6\u30fc\u5149\u306e\u521d\u671f\u5f37\u5ea6\u304c\u5a92\u8cea\u5185\u306e\u76f8\u4e92\u4f5c\u7528\u306b\u3088\u308a\u3001\u6307\u6570\u7684\u306b\u5897\u52a0\u3059\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

4. \u8a08\u7b97\u65b9\u6cd5<\/h2>\n

\u4ee5\u4e0b\u306b\u5177\u4f53\u7684\u306a\u8a08\u7b97\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n

\u4f8b\u3048\u3070\u3001\u5165\u529b\u5f37\u5ea6 \\( I_0 \\) \u304c 2 mW\uff08\u30df\u30ea\u30ef\u30c3\u30c8\uff09\u3001\u30b2\u30a4\u30f3\u4fc2\u6570 \\( g \\) \u304c 0.5 cm\\(^{-1}\\)\u3001\u5897\u5e45\u5a92\u8cea\u306e\u9577\u3055 \\( L \\) \u304c 10 cm \u3067\u3042\u308b\u5834\u5408\u3001\u51fa\u529b\u5f37\u5ea6 \\( I \\) \u3092\u6c42\u3081\u307e\u3059\uff1a<\/p>\n

1. \u5148\u305a\u3001\u6307\u6570\u90e8\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/p>\n

\\[
\ngL = 0.5 \\times 10 = 5
\n\\]<\/p>\n

2. \u6b21\u306b\u3001\u6307\u6570\u95a2\u6570 \\( e^{gL} \\) \u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/p>\n

\\[
\ne^5 \\approx 148.41
\n\\]<\/p>\n

3. \u6700\u5f8c\u306b\u3001\u51fa\u529b\u5f37\u5ea6\u3092\u6c42\u3081\u307e\u3059\u3002<\/p>\n

\\[
\nI = I_0 e^{gL} = 2 \\times 148.41 = 296.82 \\text{ mW}
\n\\]<\/p>\n

\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u5165\u529b\u5f37\u5ea6\u304c296.82 mW\u306b\u5897\u5e45\u3055\u308c\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n

5. \u5229\u7528\u4f8b<\/h2>\n

\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u306e\u5fdc\u7528\u4f8b\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n

1. **\u901a\u4fe1**\uff1a\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u901a\u4fe1\u3067\u306f\u3001\u4fe1\u53f7\u306e\u6e1b\u8870\u3092\u9632\u3050\u305f\u3081\u306b\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u9577\u8ddd\u96e2\u306e\u30c7\u30fc\u30bf\u4f1d\u9001\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002
\n2. **\u533b\u7642**\uff1a\u30ec\u30fc\u30b6\u30fc\u624b\u8853\u3084\u30ec\u30fc\u30b6\u30fc\u6cbb\u7642\u306b\u304a\u3044\u3066\u3001\u5fc5\u8981\u306a\u51fa\u529b\u3092\u5f97\u308b\u305f\u3081\u306b\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u304c\u5229\u7528\u3055\u308c\u307e\u3059\u3002
\n3. **\u30ea\u30b5\u30fc\u30c1**\uff1a\u79d1\u5b66\u7814\u7a76\u306b\u304a\u3044\u3066\u3001\u9ad8\u30a8\u30cd\u30eb\u30ae\u30fc\u30ec\u30fc\u30b6\u30fc\u3092\u751f\u6210\u3057\u3001\u7cbe\u5bc6\u8a08\u6e2c\u3084\u5b9f\u9a13\u3092\u884c\u3046\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n

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

\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u306f\u3001\u9ad8\u52b9\u7387\u3067\u591a\u76ee\u7684\u306b\u5229\u7528\u3067\u304d\u308b\u6280\u8853\u3067\u3059\u3002\u305d\u306e\u57fa\u672c\u539f\u7406\u3068\u8a08\u7b97\u65b9\u6cd5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u591a\u304f\u306e\u5fdc\u7528\u5206\u91ce\u3067\u306e\u52b9\u679c\u7684\u306a\u5229\u7528\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u306e\u7406\u8ad6\u3068\u5b9f\u7528\u6027\u3092\u77e5\u308b\u3053\u3068\u3067\u3001\u3055\u3089\u306b\u6df1\u3044\u77e5\u8b58\u3092\u5f97\u3066\u3001\u5b9f\u969b\u306e\u5fdc\u7528\u306b\u5f79\u7acb\u3066\u3066\u3044\u305f\u3060\u3051\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/p>\n

\u3053\u308c\u304c\u3055\u3089\u306b\u7406\u89e3\u3092\u6df1\u3081\u308b\u4e00\u52a9\u3068\u306a\u308b\u3053\u3068\u3092\u9858\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u306e\u539f\u7406\u3001\u57fa\u672c\u516c\u5f0f\u3001\u8a08\u7b97\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3001\u901a\u4fe1\u3001\u533b\u7642\u3001\u7814\u7a76\u5206\u91ce\u3067\u306e\u5177\u4f53\u7684\u306a\u5229\u7528\u4f8b\u3092\u7d39\u4ecb\u3059\u308b\u8a18\u4e8b\u3067\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-209258","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\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u516c\u5f0f | \u89e3\u8aac\u30fb\u8a08\u7b97\u65b9\u6cd5\u30fb\u5229\u7528<\/title>\n<meta name=\"description\" content=\"\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u306e\u539f\u7406\u3001\u57fa\u672c\u516c\u5f0f\u3001\u8a08\u7b97\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3001\u901a\u4fe1\u3001\u533b\u7642\u3001\u7814\u7a76\u5206\u91ce\u3067\u306e\u5177\u4f53\u7684\u306a\u5229\u7528\u4f8b\u3092\u7d39\u4ecb\u3059\u308b\u8a18\u4e8b\u3067\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\/%e3%83%ac%e3%83%bc%e3%82%b6%e3%83%bc%e5%a2%97%e5%b9%85%e5%85%ac%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%83%bb%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%83%bb%e5%88%a9%e7%94%a8\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u30ec\u30fc\u30b6\u30fc\u5897\u5e45\u516c\u5f0f | \u89e3\u8aac\u30fb\u8a08\u7b97\u65b9\u6cd5\u30fb\u5229\u7528\" \/>\n<meta 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