Published by:
CGP EDU Academic Team
Published on: September 12, 2026
The phase angle between e.m.f. and current in 
series ac circuit is
A
0 to 
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
In a series LCR (Inductor, Capacitor, Resistor) circuit, the phase angle between the electromotive force (e.m.f.) and the current is given by the relationship of the reactances of the inductor (X_L) and the capacitor (X_C) to the resistance (R). The phase angle (φ) can be calculated using the formula:
$$ an( heta) = \frac{X_L - X_C}{R} $$
For this circuit, the phase angle can vary between 0 (when the circuit is purely resistive) and π/2 (when it is purely reactive). Hence, the phase angle between the e.m.f. and the current can range from 0 to π/2. Therefore, the correct answer is A.
$$ an( heta) = \frac{X_L - X_C}{R} $$
For this circuit, the phase angle can vary between 0 (when the circuit is purely resistive) and π/2 (when it is purely reactive). Hence, the phase angle between the e.m.f. and the current can range from 0 to π/2. Therefore, the correct answer is A.
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