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Question: Lenz’s law is expressed by the following formula (here e = induced e.m.f., $\varphi$ = magnetic flux in one turn and N = number of turns)

1) $e = - \varphi \frac{{dN}}{{dt}}$

2) $e = - N\frac{{d\varphi }}{{dt}}$

3) $e = - \frac{d}{{dt}}\left( {\frac{\varphi }{N}} \right)$

4) $e = N\frac{{d\varphi }}{{dt}}$

Solution:

Explanation: No Explanation

Faraday's Law and Lenz's Law

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