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170408 04:40
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電學
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郭俊偉
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Jun 6, 2013, 6:29:08 AM
6/6/13
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to feynm...@googlegroups.com
第5點:W=FXS=>V=ES
請問為何這裡的FS為何不是用內積算?
討論區板主
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Jun 10, 2013, 11:53:49 AM
6/10/13
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to feynm...@googlegroups.com
您好:
要用內積算,只是高中推導時不會寫那麼嚴謹
如果要講比較細的話
dW是F跟每一段小位移dS的內積,每一段的dW通通加起來才是W
同理dV是E跟每一段小位移dS的內積,每一段的dV通通加起來才是V
可以瀏覽一下維基的列式
靜電學裡的電勢
郭俊偉於 2013年6月6日星期四UTC+8下午6時29分08秒寫道:
第5點:W=FXS=>V=ES
請問為何這裡的FS為何不是用內積算?
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