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MHT CET 2025 (23 Apr, Shift 1) · Pure R, L and C Circuits

Pure R, L and C Circuits question from MHT CET 2025 (23 Apr, Shift 1)

Q17MHT CET 2025 · 23 APR · SHIFT 1Easy

Pure R, L and C Circuits

An a. c. source is connected across a pure inductor. Which one of the following figures shows the correct phase relation between the current and e.m.f.?

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Answer: (b)

In a pure inductor the current lags the emf by $\frac{\pi}{2}$ .
With anticlockwise rotation, $i_L$ must be $90^\circ$ clockwise from $e_L$ .
Figure B: $e_L$ points right and $i_L$ points down, so $i_L$ lags by $90^\circ$ .
So the answer is (b), figure B.

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