1.

Lenz?s law is expressed by the following formula (here e = induced e.m.f., f = magnetic flux in one turn and N = number of turns)                                                        [MP PET 2002]

A.            \[e=-\varphi \frac{dN}{dt}\] 
B.            \[e=-N\frac{d\varphi }{dt}\]
C.            \[e=-\frac{d}{dt}\left( \frac{\varphi }{N} \right)\]   
D.            \[e=N\frac{d\varphi }{dt}\]
Answer» C.            \[e=-\frac{d}{dt}\left( \frac{\varphi }{N} \right)\]   


Discussion

No Comment Found

Related MCQs