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KEAM 2022 Physics and Chemistry Solved Paper

Question : 50 of 120

Marks: +1, -0

The direction of eddy currents is given by Lenz' law.
A choke coil is a pure inductor used for controlling current in an A.C. circuit.
The r.m.s. value of A.C. current is $\sqrt{2}$ times the peak value of A.C. current.
Quality factor is a measure of sharpness of resonance in A.C. circuit.
Magnetic field energy stored in an inductor of inductance $L$ is $\;\frac{1}{2} L I^{2}$ .

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