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MHT CET 2019 (3 May, Shift 1) · Pure R, L and C Circuits

Pure R, L and C Circuits question from MHT CET 2019 (3 May, Shift 1)

Q60MHT CET 2019 · 3 MAY · SHIFT 1Easy

Pure R, L and C Circuits

A coil has inductance 2 H. The ratio of its reactance, when it is connected first to an $AC$ source and then to DC source, is

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Answer: (d)

For a.c.: $X_L = \omega L$ (finite). For d.c.: $\omega = 0$ , so $X_L = 0$ .
Ratio $= \frac{\omega L}{0} = \infty$
So the answer is (d) infinity.

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