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在电磁感应规律复习中经常会遇到B(t)和B(x)两种变化场中感应电动势的求解,由于变化规律不尽相同,因此在求解磁通量及感应电动势上还是有较大差别,解题中如果不注意法拉第电磁感应定律的理解和这两类变化磁场的细致比较,就会在求解电动势上引起混淆,产生较大失误.一、正确理解B(t)和B(x)函数变化关系
In the review of electromagnetic induction law often encounter B (t) and B (x) two kinds of changes in the field of induced electromotive force solution, due to changes in the law is not the same, so in solving the flux and induced electromotive force or there is a big difference, If we do not pay attention to the understanding of Faraday’s law of electromagnetic induction and the careful comparison of these two types of changing magnetic fields, we will cause confusion in the solution of the electromotive force, resulting in a large error. First, a correct understanding of B (t) and B (x) alternative relation