Q. Current in the LCR circuit becomes extremely large when
A) Frequency of $AC$ supply is increased
B) Frequency of $AC$ supply is decreased
C) Inductive reactance becomes equal to capacitive reactance
D) Inductance becomes equal to capacitance
Explanation
(c) The current in $LCR$ circuit becomes maximum at series resonance condition. At this point the total reactance of the circuit is zero. That means the reactance of inductance becomes equal and opposite to the reactance by the capacitor
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.