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5/31 MCQs for:
Electromagnetism
As the frequency of the AC voltage across an inductor approaches zero, the inductive reactance of that coil:
If the inductance and the capacitance both double in an LRC series circuit, the resonant frequency of that circuit will:
A pure inductor is connected to an AC power supply. In this circuit, the current:
The cross-sectional area of an adjustable single loop is reduced from 1.0 m2 to 0.50 m2 in 0.10 s. What is the average emf that is induced in this coil if it is in a region where B = 2.0 T upward, and the coil's plane is perpendicular to B?

A circular loop of radius 0.10 m is rotating in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic field vector are at an angle of 300.