法拉第电磁感应原理中动生电动势有三根平行等间距水平放置的光滑直导轨(间距为d)a,b,c(依此排列),在a,b左端用导线连接起来,一根长2d,质量为2m的金属棒L跨接在a,c上,与b绝缘,一根长d,质
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![法拉第电磁感应原理中动生电动势有三根平行等间距水平放置的光滑直导轨(间距为d)a,b,c(依此排列),在a,b左端用导线连接起来,一根长2d,质量为2m的金属棒L跨接在a,c上,与b绝缘,一根长d,质](/uploads/image/z/9913948-52-8.jpg?t=%E6%B3%95%E6%8B%89%E7%AC%AC%E7%94%B5%E7%A3%81%E6%84%9F%E5%BA%94%E5%8E%9F%E7%90%86%E4%B8%AD%E5%8A%A8%E7%94%9F%E7%94%B5%E5%8A%A8%E5%8A%BF%E6%9C%89%E4%B8%89%E6%A0%B9%E5%B9%B3%E8%A1%8C%E7%AD%89%E9%97%B4%E8%B7%9D%E6%B0%B4%E5%B9%B3%E6%94%BE%E7%BD%AE%E7%9A%84%E5%85%89%E6%BB%91%E7%9B%B4%E5%AF%BC%E8%BD%A8%EF%BC%88%E9%97%B4%E8%B7%9D%E4%B8%BAd%EF%BC%89a%2Cb%2Cc%EF%BC%88%E4%BE%9D%E6%AD%A4%E6%8E%92%E5%88%97%EF%BC%89%2C%E5%9C%A8a%2Cb%E5%B7%A6%E7%AB%AF%E7%94%A8%E5%AF%BC%E7%BA%BF%E8%BF%9E%E6%8E%A5%E8%B5%B7%E6%9D%A5%2C%E4%B8%80%E6%A0%B9%E9%95%BF2d%2C%E8%B4%A8%E9%87%8F%E4%B8%BA2m%E7%9A%84%E9%87%91%E5%B1%9E%E6%A3%92L%E8%B7%A8%E6%8E%A5%E5%9C%A8a%2Cc%E4%B8%8A%2C%E4%B8%8Eb%E7%BB%9D%E7%BC%98%2C%E4%B8%80%E6%A0%B9%E9%95%BFd%2C%E8%B4%A8)
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