L, C and R are connected in series to an a. c. source. Which one of the following is true? Phase relation between current and voltage is such that (a) both are out of phase with each other in ' R '. (b) both are in phase in ' L ' and out of phase in ' C '. (c) both are out of phase in ' L ' and in phase in 'C'. (d) both are out of phase in both ' C ' and ' L '.

Answer: (d). In R: V and i in phase. In L: V leads i by 90°; in C: V lags i by 90°. Both out of phase. So the answer is (d).

L, C and R are connected in series to an a. c. source. Which one of… | MHT CET 2025 (26 Apr, Shift 1)

Q16MHT CET 2025 · 26 APR · SHIFT 1Easy

Series LCR Circuit

$L, C$ and R are connected in series to an a. c. source. Which one of the following is true? Phase relation between current and voltage is such that

Show answer and solution

Answer: (d)

In $R$ : $V$ and $i$ in phase.
In $L$ : $V$ leads $i$ by $90^\circ$ ; in $C$ : $V$ lags $i$ by $90^\circ$ . Both out of phase.
So the answer is (d).

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