Year: 2022 Re-Exam
Topic: Electromagnetic induction
Time :
1. An inductor of inductance 2 mH is connected to a 220V, 50 Hz a.c. source. Let the inductive reactance in the circuit is X1. If a 220V dc source replaces the ac source in the circuit, then the inductive reactance in the circuit is X2. X1 and X2 resspectively are