{"id":209111,"date":"2024-03-21T14:06:02","date_gmt":"2024-03-21T14:06:02","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e5%81%8f%e8%a7%92%e3%81%ae%e6%96%b9%e7%a8%8b%e5%bc%8f-%e5%ae%9a%e7%be%a9%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%80%81%e7%94%a8%e9%80%94\/"},"modified":"2024-05-17T15:07:23","modified_gmt":"2024-05-17T15:07:23","slug":"%e5%81%8f%e8%a7%92%e3%81%ae%e6%96%b9%e7%a8%8b%e5%bc%8f-%e5%ae%9a%e7%be%a9%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%80%81%e7%94%a8%e9%80%94","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e5%81%8f%e8%a7%92%e3%81%ae%e6%96%b9%e7%a8%8b%e5%bc%8f-%e5%ae%9a%e7%be%a9%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%80%81%e7%94%a8%e9%80%94\/","title":{"rendered":"\u504f\u89d2\u306e\u65b9\u7a0b\u5f0f | \u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u7528\u9014"},"content":{"rendered":"<p class=\"sidekick\">\u504f\u89d2\u306e\u65b9\u7a0b\u5f0f\u306e\u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u7528\u9014\u306b\u3064\u3044\u3066\u89e3\u8aac\u3002\u4ea4\u6d41\u56de\u8def\u3001\u96fb\u78c1\u6ce2\u89e3\u6790\u3001\u4fe1\u53f7\u51e6\u7406\u306a\u3069\u3067\u306e\u5b9f\u7528\u7684\u306a\u5fdc\u7528\u306b\u3064\u3044\u3066\u3082\u8aac\u660e\u3002<\/p>\n<h2>\u504f\u89d2\u306e\u65b9\u7a0b\u5f0f | \u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u7528\u9014<\/h2>\n<p>\u504f\u89d2\u306e\u65b9\u7a0b\u5f0f\u306f\u3001\u96fb\u6c17\u3068\u78c1\u6c17\u306e\u5206\u91ce\u3067\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002\u7279\u306b\u3001\u4ea4\u6d41\u56de\u8def\u3084\u96fb\u78c1\u6ce2\u306e\u89e3\u6790\u306b\u304a\u3044\u3066\u3088\u304f\u7528\u3044\u3089\u308c\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u504f\u89d2\u306e\u65b9\u7a0b\u5f0f\u306e\u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u305d\u3057\u3066\u5b9f\u969b\u306e\u7528\u9014\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h2>\u504f\u89d2\u306e\u5b9a\u7fa9<\/h2>\n<p>\u307e\u305a\u3001\u504f\u89d2\u3068\u306f\u4f55\u304b\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u3001\u4ea4\u6d41\uff08AC\uff09\u306e\u96fb\u5727\u3068\u96fb\u6d41\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u4ea4\u6d41\u3067\u306f\u3001\u96fb\u5727\u3068\u96fb\u6d41\u306f\u6642\u9593\u3068\u5171\u306b\u5909\u5316\u3057\u3001\u901a\u5e38\u306f\u6b63\u5f26\u6ce2\u306e\u5f62\u3092\u53d6\u308a\u307e\u3059\u3002\u3053\u306e\u3068\u304d\u3001\u96fb\u5727\u3068\u96fb\u6d41\u306e\u9593\u306b\u4f4d\u76f8\u306e\u9055\u3044\u304c\u751f\u3058\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u4f4d\u76f8\u306e\u9055\u3044\u3092\u6570\u5024\u3067\u8868\u3057\u305f\u3082\u306e\u304c\u300c\u504f\u89d2\u300d\u3068\u547c\u3070\u308c\u307e\u3059\u3002<\/p>\n<p>\u6570\u5f0f\u3067\u8868\u3059\u3068\u3001\u504f\u89d2 \\(\\phi\\) \u306f\u6b21\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p style=\"text-align: center;\">\n\\[<br \/>\n\\phi = \\omega t + \\theta<br \/>\n\\]\n<\/p>\n<p>\u3053\u3053\u3067\u3001\\(\\omega\\) \u306f\u89d2\u5468\u6ce2\u6570\u3001\\(t\\) \u306f\u6642\u9593\u3001\\(\\theta\\) \u306f\u521d\u671f\u4f4d\u76f8\u89d2\u3067\u3059\u3002<\/p>\n<h2>\u504f\u89d2\u306e\u8a08\u7b97\u65b9\u6cd5<\/h2>\n<p>\u504f\u89d2\u3092\u8a08\u7b97\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u307e\u305a\u96fb\u5727\u3068\u96fb\u6d41\u306e\u6642\u523b\u51fd\u6570\u3092\u6b63\u78ba\u306b\u7406\u89e3\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u6b21\u306e\u3088\u3046\u306a\u6b63\u5f26\u6ce2\u306e\u96fb\u5727\u3068\u96fb\u6d41\u304c\u4e0e\u3048\u3089\u308c\u3066\u3044\u307e\u3059\uff1a<\/p>\n<p style=\"text-align: center;\">\n\\[<br \/>\nV(t) = V_0 \\sin(\\omega t + \\theta_V)<br \/>\n\\]<br \/>\n\\]<\/p>\n<p style=\"text-align: center;\">\n\\[<br \/>\nI(t) = I_0 \\sin(\\omega t + \\theta_I)<br \/>\n\\]\n<\/p>\n<p>\u3053\u3053\u3067\u3001\\(V_0\\) \u3068 \\(I_0\\) \u306f\u305d\u308c\u305e\u308c\u96fb\u5727\u3068\u96fb\u6d41\u306e\u6700\u5927\u5024\u3001\\(\\theta_V\\) \u3068 \\(\\theta_I\\) \u306f\u305d\u308c\u305e\u308c\u96fb\u5727\u3068\u96fb\u6d41\u306e\u521d\u671f\u4f4d\u76f8\u89d2\u3067\u3059\u3002\u504f\u89d2 \\(\\phi\\) \u306f\u6b21\u306e\u65b9\u7a0b\u5f0f\u3067\u6c42\u3081\u3089\u308c\u307e\u3059\uff1a<\/p>\n<p style=\"text-align: center;\">\n\\[<br \/>\n\\phi = \\theta_V &#8211; \\theta_I<br \/>\n\\]\n<\/p>\n<p>\u3053\u306e\u504f\u89d2\u3092\u4f7f\u3048\u3070\u3001\u96fb\u5727\u3068\u96fb\u6d41\u306e\u9593\u306e\u4f4d\u76f8\u5dee\u3092\u7c21\u5358\u306b\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u504f\u89d2\u306e\u7528\u9014<\/h2>\n<p>\u504f\u89d2\u306e\u65b9\u7a0b\u5f0f\u306f\u3001\u591a\u304f\u306e\u5b9f\u7528\u7684\u306a\u5fdc\u7528\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3044\u304f\u3064\u304b\u306e\u4e3b\u8981\u306a\u7528\u9014\u3092\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n<h3>1. \u4ea4\u6d41\u56de\u8def\u306e\u89e3\u6790<\/h3>\n<p>\u504f\u89d2\u306f\u3001\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\uff08\u62b5\u6297\u3001\u8a98\u5c0e\u6027\u30ea\u30a2\u30af\u30bf\u30f3\u30b9\u3001\u9759\u96fb\u5bb9\u91cf\u6027\u30ea\u30a2\u30af\u30bf\u30f3\u30b9\uff09\u306e\u5f71\u97ff\u3092\u8003\u616e\u3059\u308b\u969b\u306b\u91cd\u8981\u3067\u3059\u3002\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u4f4d\u76f8\u89d2\u3092\u6c42\u3081\u308b\u3053\u3068\u3067\u3001\u4ea4\u6d41\u56de\u8def\u306e\u6319\u52d5\u3092\u3088\u308a\u6b63\u78ba\u306b\u89e3\u6790\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>2. \u529b\u7387\u306e\u8a08\u7b97<\/h3>\n<p>\u96fb\u5727\u3068\u96fb\u6d41\u306e\u504f\u89d2\u306f\u529b\u7387\u306e\u8a08\u7b97\u306b\u3082\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u529b\u7387 \\(\\cos(\\phi)\\) \u306f\u3001\u96fb\u529b\u306e\u52b9\u7387\u3092\u793a\u3059\u91cd\u8981\u306a\u6307\u6a19\u3067\u3059\u3002\u96fb\u529b\u696d\u754c\u3067\u306f\u3001\u529b\u7387\u6539\u5584\u306f\u975e\u5e38\u306b\u91cd\u8981\u306a\u8ab2\u984c\u3067\u3059\u3002<\/p>\n<h3>3. \u96fb\u78c1\u6ce2\u306e\u4f1d\u64ad\u89e3\u6790<\/h3>\n<p>\u504f\u89d2\u306f\u3001\u96fb\u78c1\u6ce2\u306e\u4f4d\u76f8\u5909\u5316\u3092\u89e3\u6790\u3059\u308b\u969b\u306b\u3082\u7528\u3044\u3089\u308c\u307e\u3059\u3002\u7279\u306b\u3001\u901a\u4fe1\u6280\u8853\u3084\u30ec\u30fc\u30c0\u30fc\u6280\u8853\u306b\u304a\u3044\u3066\u3001\u4fe1\u53f7\u306e\u4f4d\u76f8\u89e3\u6790\u306f\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n<h3>4. \u4fe1\u53f7\u51e6\u7406<\/h3>\n<p>\u4fe1\u53f7\u51e6\u7406\u306e\u5206\u91ce\u3067\u3082\u3001\u504f\u89d2\u89e3\u6790\u306f\u91cd\u8981\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u30aa\u30fc\u30c7\u30a3\u30aa\u4fe1\u53f7\u3084\u753b\u50cf\u4fe1\u53f7\u306e\u51e6\u7406\u306b\u304a\u3044\u3066\u3001\u4f4d\u76f8\u60c5\u5831\u306f\u54c1\u8cea\u3084\u7cbe\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u504f\u89d2\u306e\u65b9\u7a0b\u5f0f\u306e\u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u305d\u3057\u3066\u4e3b\u8981\u306a\u7528\u9014\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002\u504f\u89d2\u306f\u3001\u4ea4\u6d41\u56de\u8def\u306e\u6319\u52d5\u3084\u96fb\u78c1\u6ce2\u306e\u4f1d\u64ad\u3001\u4fe1\u53f7\u51e6\u7406\u306a\u3069\u591a\u5c90\u306b\u308f\u305f\u308b\u5206\u91ce\u3067\u5f79\u7acb\u3064\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002\u3053\u308c\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u7269\u7406\u3084\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u306e\u77e5\u8b58\u3092\u6df1\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u504f\u89d2\u306e\u65b9\u7a0b\u5f0f\u306e\u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u7528\u9014\u306b\u3064\u3044\u3066\u89e3\u8aac\u3002\u4ea4\u6d41\u56de\u8def\u3001\u96fb\u78c1\u6ce2\u89e3\u6790\u3001\u4fe1\u53f7\u51e6\u7406\u306a\u3069\u3067\u306e\u5b9f\u7528\u7684\u306a\u5fdc\u7528\u306b\u3064\u3044\u3066\u3082\u8aac\u660e\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-209111","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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