A generator is constructed by rotating a coil of N turns in a magneticfield B at a frequencyf. The internal resistanceof the coil is R and the cross sectional area of the coil is A. (True/False)

(1)The average induced EMFdoubles if the area A is doubled.

(2)The average induced EMF doubles if the resistance R is doubled.

(3)The average induced EMF doubles if the magnetic field B is doubled.

(4)The maximum induced EMF occurs when the coil is rotated about an axis perpendicular to area A.

(5)The average induced EMF doubles if the frequency f is doubled.

– Please solve and explain problem.

Hello and thank you for posting your question to Brainmass.

If the axis of rotation is parallel to the cross area (perpendicular to the coli) and perpendicular to the field the flux through the coil is

Flux = N*B*A*sin(w*t + …

This solution assists with the true and false questions.