PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
For a given alternating source, the current in a series RLC circuit is highest at resonance because
(a) the inductive and capacitive reactances cancel leaving only resistance
(b) the resistance of the circuit becomes zero
(c) the phase difference between voltage and current becomes 90∘
(d) the power factor of the circuit drops to zero