An Ac Generator Consisting of a Coil with N Turns

Multiple Choice

An ac generator consisting of a coil with N turns rotating at angular speed ω in an external magnetic field B produces a maximum emf ε₀.If you now decrease the number of turns in the coil to N/2 and at the same time cause it to rotate twice as fast,what will be the new maximum emf if you do not change any of the other quantities?

A) 4ε₀
B) 2ε₀
C) ε₀
D) ε₀/2
E) ε₀/4