A Rectangular Loop of Wire Is Placed Perpendicular to a Uniform

Multiple Choice

A rectangular loop of wire is placed perpendicular to a uniform magnetic field and then spun around one of its sides at frequency f.The induced emf is a maximum when:

A) the flux is zero
B) the flux is a maximum
C) the flux is half its maximum value
D) the derivative of the flux with respect to time is zero
E) none of the above