AIPMT-MAINS Physics Alternating Current Class 12 Questions

The instantaneous values of alternating current and voltages in a circuit are given as i = 1/√2 sin(100πt) amper and e = 1/√2 sin(100πt + π/3) Volt. The average power in Watts consumed in the circuit is:

A coil has resistances 30 Ω and inductive reactance 20 Ω at 50 Hz frequency. If an ac source, of 200 volt, 100 Hz is connected across the coil, the current in the coil will be

Power dissipated in an LCR series circuit connected to an a.c source of emf ε is: