The Maximum Induced Emf in a Generator Whose Coils Are

The maximum induced emf in a generator whose coils are rotating at 240 rpm is 35 V.If,instead,it is desired to generate a maximum emf of 45 V but with half the magnetic field,what rotation rate must be used?

A) 380 rpm
B) 190 rpm
C) 310 rpm
D) 165 rpm
E) 610 rpm

Correct Answer:

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