A small bulb is connected in series with an ideal inductor
PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A small bulb is connected in series with an ideal inductor, a capacitor, and a resistor to an AC source of fixed rms voltage. The bulb glows brightest when the circuit is at resonance because
(a) the power factor of the circuit becomes zero
(b) the inductor behaves like an open circuit
(c) the current in the circuit is maximum
(d) the voltage across the capacitor is maximum