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.
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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.