Question

In a series RLC circuit, the phase difference between the voltage across the capacitor and the current in the circuit is?

(a) 0^0

(b) 90^0

(c) 180^0

(d) 360^0

This question was addressed to me in an online interview.

The query is from Voltages in a Series RLC Circuit in section Resonance in AC Circuits of Basic Electrical Engineering

Answer 1

Right option is (b) 90^0

To elaborate: In a series RLC circuit, voltage across capacitor lag the current by 90^0 so, the phase difference between the voltage across the capacitor and current is 90^0.