A generator is constructed by rotating a coil of N turns in a magnetic field B a

Question

A generator is constructed by rotating a coil of N turns in a magnetic field B at a frequency f. The internal resistance of the coil is R and the cross sectional area of the coil is A. select true or false

The average induced EMF doubles if the frequency f is doubled.
The average induced EMF doubles if the resistance R is doubled.
The average induced EMF doubles if the area A is doubled.
The average induced EMF doubles if the magnetic field B is doubled.
The maximum induced EMF occurs when the coil is rotated about an axis perpendicular to area A.

Explanation / Answer

The average induced EMF doubles if the resistance R is doubled.FALSE
2 The average induced EMF doubles if the area A is doubled. TRUE
3 The maximum induced EMF occurs when the coil is rotated about an axis perpendicular to area A.FALSE
4 The average induced EMF doubles if the magnetic field B is doubled. TRUE
5 The average induced EMF doubles if the frequency f is doubled. TRUE

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