{"id":209447,"date":"2024-03-21T14:08:06","date_gmt":"2024-03-21T14:08:06","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e5%8f%8d%e5%b0%84%e4%bf%82%e6%95%b0%e3%81%a8%e9%80%8f%e9%81%8e%e4%bf%82%e6%95%b0-%e6%a6%82%e8%a6%81%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95\/"},"modified":"2024-05-17T15:12:58","modified_gmt":"2024-05-17T15:12:58","slug":"%e5%8f%8d%e5%b0%84%e4%bf%82%e6%95%b0%e3%81%a8%e9%80%8f%e9%81%8e%e4%bf%82%e6%95%b0-%e6%a6%82%e8%a6%81%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e5%8f%8d%e5%b0%84%e4%bf%82%e6%95%b0%e3%81%a8%e9%80%8f%e9%81%8e%e4%bf%82%e6%95%b0-%e6%a6%82%e8%a6%81%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u53cd\u5c04\u4fc2\u6570\u3068\u900f\u904e\u4fc2\u6570 | \u6982\u8981\u3068\u8a08\u7b97\u65b9\u6cd5"},"content":{"rendered":"<p class=\"sidekick\">\u53cd\u5c04\u4fc2\u6570\u3068\u900f\u904e\u4fc2\u6570\u306e\u6982\u8981\u3068\u57fa\u672c\u7684\u306a\u8a08\u7b97\u65b9\u6cd5\u3001\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u7528\u3044\u305f\u5177\u4f53\u4f8b\u3092\u901a\u3058\u3066\u3001\u7269\u7406\u5b66\u3084\u5de5\u5b66\u306b\u304a\u3051\u308b\u6ce2\u306e\u632f\u821e\u3044\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h2>\u53cd\u5c04\u4fc2\u6570\u3068\u900f\u904e\u4fc2\u6570 | \u6982\u8981\u3068\u8a08\u7b97\u65b9\u6cd5<\/h2>\n<p>\u7269\u7406\u5b66\u3084\u5de5\u5b66\u306e\u5206\u91ce\u3067\u306f\u3001\u53cd\u5c04\u4fc2\u6570\u3068\u900f\u904e\u4fc2\u6570\u306f\u975e\u5e38\u306b\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u4fc2\u6570\u306f\u3001\u96fb\u78c1\u6ce2\u3084\u97f3\u6ce2\u304c\u7570\u306a\u308b\u5a92\u8cea\u306e\u9593\u3067\u3069\u306e\u3088\u3046\u306b\u632f\u821e\u3046\u304b\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u53cd\u5c04\u4fc2\u6570\u3068\u900f\u904e\u4fc2\u6570\u306e\u6982\u8981\u3068\u57fa\u672c\u7684\u306a\u8a08\u7b97\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h2>\u53cd\u5c04\u4fc2\u6570\u3068\u306f\uff1f<\/h2>\n<p>\u53cd\u5c04\u4fc2\u6570\u3068\u306f\u3001\u6ce2\u304c\u5883\u754c\u9762\u3067\u53cd\u5c04\u3059\u308b\u969b\u306e\u5f37\u3055\u306e\u6bd4\u7387\u3092\u8868\u3059\u3082\u306e\u3067\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001\u53cd\u5c04\u6ce2\u306e\u632f\u5e45\u3092\u5165\u5c04\u6ce2\u306e\u632f\u5e45\u3067\u5272\u3063\u305f\u5024\u3067\u3059\u3002\u6570\u5f0f\u3067\u8868\u3059\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n<p>\\[<br \/>\nR = \\left|\\frac{E_r}{E_i}\\right|<br \/>\n\\]<\/p>\n<p>\u3053\u3053\u3067 $R$ \u306f\u53cd\u5c04\u4fc2\u6570\u3001$E_r$ \u306f\u53cd\u5c04\u6ce2\u306e\u96fb\u5834\uff08\u3082\u3057\u304f\u306f\u97f3\u5727\uff09\u3001$E_i$ \u306f\u5165\u5c04\u6ce2\u306e\u96fb\u5834\uff08\u3082\u3057\u304f\u306f\u97f3\u5727\uff09\u3067\u3059\u3002<\/p>\n<h2>\u900f\u904e\u4fc2\u6570\u3068\u306f\uff1f<\/h2>\n<p>\u900f\u904e\u4fc2\u6570\u3068\u306f\u3001\u6ce2\u304c\u5883\u754c\u3092\u900f\u904e\u3059\u308b\u969b\u306e\u5f37\u3055\u306e\u6bd4\u7387\u3092\u8868\u3057\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001\u900f\u904e\u6ce2\u306e\u632f\u5e45\u3092\u5165\u5c04\u6ce2\u306e\u632f\u5e45\u3067\u5272\u3063\u305f\u5024\u3067\u3059\u3002\u6570\u5f0f\u3067\u8868\u3059\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n<p>\\[<br \/>\nT = \\left|\\frac{E_t}{E_i}\\right|<br \/>\n\\]<\/p>\n<p>\u3053\u3053\u3067 $T$ \u306f\u900f\u904e\u4fc2\u6570\u3001$E_t$ \u306f\u900f\u904e\u6ce2\u306e\u96fb\u5834\uff08\u3082\u3057\u304f\u306f\u97f3\u5727\uff09\u3001$E_i$ \u306f\u5165\u5c04\u6ce2\u306e\u96fb\u5834\uff08\u3082\u3057\u304f\u306f\u97f3\u5727\uff09\u3067\u3059\u3002<\/p>\n<h2>\u53cd\u5c04\u4fc2\u6570\u306e\u8a08\u7b97\u65b9\u6cd5<\/h2>\n<p>\u53cd\u5c04\u4fc2\u6570\u3092\u8a08\u7b97\u3059\u308b\u305f\u3081\u306e\u4e00\u822c\u7684\u306a\u65b9\u6cd5\u306b\u306f\u3001\u5a92\u8cea\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\uff08Z\uff09\u3092\u4f7f\u7528\u3059\u308b\u624b\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u5a92\u8cea1\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092 $Z_1$\u3001\u5a92\u8cea2\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092 $Z_2$ \u3068\u3059\u308b\u3068\u3001\u53cd\u5c04\u4fc2\u6570\u306f\u4ee5\u4e0b\u306e\u516c\u5f0f\u3067\u8a08\u7b97\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p>\\[<br \/>\nR = \\left|\\frac{Z_2 &#8211; Z_1}{Z_2 + Z_1}\\right|<br \/>\n\\]<\/p>\n<p>\u3053\u306e\u516c\u5f0f\u304b\u3089\u308f\u304b\u308b\u3088\u3046\u306b\u3001\u5a92\u8cea\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u5dee\u304c\u5927\u304d\u3044\u307b\u3069\u53cd\u5c04\u304c\u5f37\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u900f\u904e\u4fc2\u6570\u306e\u8a08\u7b97\u65b9\u6cd5<\/h2>\n<p>\u900f\u904e\u4fc2\u6570\u3082\u540c\u3058\u304f\u5a92\u8cea\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u7528\u3044\u3066\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002\u900f\u904e\u4fc2\u6570\u306f\u4ee5\u4e0b\u306e\u516c\u5f0f\u3067\u8868\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p>\\[<br \/>\nT = \\left|\\frac{2Z_2}{Z_2 + Z_1}\\right|<br \/>\n\\]<\/p>\n<p>\u3053\u3061\u3089\u3082\u5a92\u8cea\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u548c\u3068\u5dee\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u900f\u904e\u4fc2\u6570\u306f\u3001\u53cd\u5c04\u4fc2\u6570\u3068\u306f\u9006\u306b\u3001\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u5dee\u304c\u5c0f\u3055\u3044\u307b\u3069\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u4f8b\u984c<\/h2>\n<p>\u5177\u4f53\u4f8b\u3092\u7528\u3044\u3066\u3001\u53cd\u5c04\u4fc2\u6570\u3068\u900f\u904e\u4fc2\u6570\u306e\u8a08\u7b97\u3092\u884c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\u3001\u5a92\u8cea1\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c $Z_1 = 50 \\, \\Omega$\u3001\u5a92\u8cea2\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c $Z_2 = 100 \\, \\Omega$ \u3067\u3042\u308b\u5834\u5408\u3001<\/p>\n<p>\u307e\u305a\u53cd\u5c04\u4fc2\u6570\u3092\u8a08\u7b97\u3057\u307e\u3059\uff1a<\/p>\n<p>\\[<br \/>\nR = \\left|\\frac{100 &#8211; 50}{100 + 50}\\right| = \\left|\\frac{50}{150}\\right| = \\frac{1}{3} = 0.33<br \/>\n\\]<\/p>\n<p>\u6b21\u306b\u900f\u904e\u4fc2\u6570\u3092\u8a08\u7b97\u3057\u307e\u3059\uff1a<\/p>\n<p>\\[<br \/>\nT = \\left|\\frac{2 \\times 100}{100 + 50}\\right| = \\left|\\frac{200}{150}\\right| = \\frac{4}{3} \\approx 0.67<br \/>\n\\]<\/p>\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u5165\u5c04\u6ce2\u306e33%\u304c\u53cd\u5c04\u3055\u308c\u300167%\u304c\u900f\u904e\u3055\u308c\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u53cd\u5c04\u4fc2\u6570\u3068\u900f\u904e\u4fc2\u6570\u306f\u3001\u6ce2\u52d5\u304c\u7570\u306a\u308b\u5a92\u8cea\u306e\u9593\u3092\u79fb\u52d5\u3059\u308b\u969b\u306e\u632f\u821e\u3044\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002\u5a92\u8cea\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3053\u308c\u3089\u306e\u4fc2\u6570\u3092\u7c21\u5358\u306b\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u53cd\u5c04\u4fc2\u6570\u306f\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u5dee\u304c\u5927\u304d\u3044\u307b\u3069\u5927\u304d\u304f\u306a\u308a\u3001\u900f\u904e\u4fc2\u6570\u306f\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u5dee\u304c\u5c0f\u3055\u3044\u307b\u3069\u5927\u304d\u304f\u306a\u308b\u3068\u3044\u3046\u95a2\u4fc2\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u77e5\u8b58\u3092\u5fdc\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u901a\u4fe1\u3084\u97f3\u97ff\u5de5\u5b66\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u5206\u91ce\u3067\u306e\u8a2d\u8a08\u3084\u89e3\u6790\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u53cd\u5c04\u4fc2\u6570\u3068\u900f\u904e\u4fc2\u6570\u306e\u6982\u8981\u3068\u57fa\u672c\u7684\u306a\u8a08\u7b97\u65b9\u6cd5\u3001\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u7528\u3044\u305f\u5177\u4f53\u4f8b\u3092\u901a\u3058\u3066\u3001\u7269\u7406\u5b66\u3084\u5de5\u5b66\u306b\u304a\u3051\u308b\u6ce2\u306e\u632f\u821e\u3044\u3092\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-209447","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":"<!-- 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