{"id":270,"date":"2015-06-16T11:08:23","date_gmt":"2015-06-16T11:08:23","guid":{"rendered":"http:\/\/phd-kawamura.jp\/wordpress\/?p=270"},"modified":"2015-06-16T11:08:23","modified_gmt":"2015-06-16T11:08:23","slug":"cit-phys150616-1","status":"publish","type":"post","link":"http:\/\/phd-kawamura.jp\/wordpress\/cit-phys150616-1\/","title":{"rendered":"\u6559\u990a\u306e\u7269\u7406-\u554f\u984c\u96c6 - \u96fb\u78c1\u6c17\u5b66 \u30d2\u30f3\u30c8"},"content":{"rendered":"<p>\u4f8b\u984c-14<\/p>\n<p>(1)<br \/>\n\u4ed5\u4e8b\u7387$P$\u306f<\/p>\n<p>\\begin{eqnarray*}<br \/>\nP=\\frac{\\mathrm{d} w}{\\mathrm{d} t}=\\frac{\\mathrm{d} q}{\\mathrm{d} t}V=IV=I^2R<br \/>\n\\end{eqnarray*}<\/p>\n<p>\u3068\u306a\u308b\u306e\u3067\u3001$I$\u306b$I(t)$\u3092\u4ee3\u5165\u3059\u308c\u3070\u3088\u3044\u3002<\/p>\n<p>(2)<br \/>\n\u96fb\u6d41\u306f$I(t)=I_0 \\sin (2 \\pi ft)$\u306a\u306e\u3067\u3001<br \/>\n\u5e73\u5747\u96fb\u6d41\u306f\u3001$\\langle I(t)^2 \\rangle$\u3092\u8a08\u7b97\u3057\u3001$\\sqrt{\\langle I(t)^2\\rangle} $\u3059\u308b\u3053\u3068\u3067\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n<p>1\u5468\u671f\u306e\u9593\u306e\u5e73\u5747\u96fb\u6d41\u306e\u4e8c\u4e57\u306f\u3001\u6642\u9593$t$\u304c$0 \\to \\frac{1}{f}$\u3092\u8003\u3048\u308b\u3068<\/p>\n<p>\\begin{eqnarray*}<br \/>\n\\langle I(t)^2 \\rangle = \\frac{1}{1\/f}\\int_{0} ^{1\/f} I(t)^2 dt<br \/>\n\\end{eqnarray*}<\/p>\n<p>\u3092\u8a08\u7b97\u3059\u308c\u3070\u3088\u3044\u3002<br \/>\n\u8a08\u7b97\u3059\u308b\u3068\u3001<\/p>\n<p>\\begin{eqnarray*}<br \/>\n\\langle I(t)^2 \\rangle = \\frac{1}{2}I_0^2<br \/>\n\\end{eqnarray*}<\/p>\n<p>\u3068\u306a\u308b\u306e\u3067\u3001(\u9014\u4e2d\u8a08\u7b97\u306f\u81ea\u5206\u3067\u8a08\u7b97\u3057\u3066\u78ba\u8a8d\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046)<\/p>\n<p>\\begin{eqnarray*}<br \/>\nI_{rms}=\\sqrt{\\langle I(t)^2 \\rangle} = \\frac{I_0}{\\sqrt{2}}<br \/>\n\\end{eqnarray*}<\/p>\n<p>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f8b\u984c-14 (1) \u4ed5\u4e8b\u7387$P$\u306f \\begin{eqnarray*} P=\\frac{\\mathrm{d} w}{\\mathrm{d} t}=\\frac{\\mathrm{d} q}{\\mathrm{ &#8230; <\/p>\n","protected":false},"author":1,"featured_media":207,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[],"_links":{"self":[{"href":"http:\/\/phd-kawamura.jp\/wordpress\/wp-json\/wp\/v2\/posts\/270"}],"collection":[{"href":"http:\/\/phd-kawamura.jp\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/phd-kawamura.jp\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/phd-kawamura.jp\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/phd-kawamura.jp\/wordpress\/wp-json\/wp\/v2\/comments?post=270"}],"version-history":[{"count":4,"href":"http:\/\/phd-kawamura.jp\/wordpress\/wp-json\/wp\/v2\/posts\/270\/revisions"}],"predecessor-version":[{"id":274,"href":"http:\/\/phd-kawamura.jp\/wordpress\/wp-json\/wp\/v2\/posts\/270\/revisions\/274"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/phd-kawamura.jp\/wordpress\/wp-json\/wp\/v2\/media\/207"}],"wp:attachment":[{"href":"http:\/\/phd-kawamura.jp\/wordpress\/wp-json\/wp\/v2\/media?parent=270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/phd-kawamura.jp\/wordpress\/wp-json\/wp\/v2\/categories?post=270"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/phd-kawamura.jp\/wordpress\/wp-json\/wp\/v2\/tags?post=270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}