Published by:
CGP EDU Academic Team
Published on: August 21, 2026
A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and voltage is 
. If instead C is removed from the circuit, the phase difference is again 
between current and voltage. The power factor of the circuit is:
Text Solution
Verified by ExpertsThe correct answer is:
(i) When C is removed, ; (ii) From ; (i) and ; (ii), X L
When L is removed,
…(i)
When C is removed,
…(ii)
From (i) and (ii), X L = X C
Since, X L = X C , the circuit is in resonance.
Z=R
Power factor 
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