Alternating Cur...

In the non-resonant circuit, what will be the nature of the circuit for frequencies higher than the resonant frequency

In a series LCR circuit, resistance R = 100 Ω and the impedance Z = 20 Ω. The phase difference between the current and the voltage is

An LC circuit contains a 20 mH inductor and a 50 μF capacitor with an initial charge of 10 mC. The resistance of the circuit is negligible. At the instant the circuit is closed be t = 0. At what time is the energy stored completely magnetic

An ideal choke draws a current of 8 A when connected to an ac supply of 100 V, 50 Hz. A pure resistor draws a current of 10 A when connected to the same source. The ideal choke and the resistor are connected in series and then connected to the ac source of 150 V, 40 Hz. The current in the circuit becomes

In the circuit shown below, the ac source has voltage V = 20 cos (ωt) volts with ω = 2000 rad/sec. The amplitude of the current will be nearest to

Power factor is maximum in an LCR circuit when

A resistance of 40 ohm and an inductance of 95.5 millihenry are connected in series in a 50 cycles/second ac circuit. The impedance of this combination is very nearly

The power factor of an ac circuit having resistance (R) and inductance (L) connected in series and an angular velocity ω is