Calculate ( a) resistance or (b) inductance required in series to operate a lamp (60V,1OW) from asourceof(I00V, 50 Hz)

A 50 Omega resistor a 120 muF capacitor and an inductor of inductance 0.2 H are connected in series across an AC source of 10 V , 50 Hz . Calculate the average power and energy dissipated in 500 s.

An inductor of inductance 2H and a resistance of 10 Omega are connected in series to an ac source of 1109 V, 60 Hz. The current in the circuit will be

A projector lamp can be used at a maximum voltage of 60V ,its resistance is 20Omega ,the series resistance (in ohm) required to operate the lamp from a 75V supply is ............

A 150 ohm resistor and inductor of inductance L are connected in series to a 200 V, 50 Hz source of negligilbe impedance. The current comes to 1 A. when the source is changed to 400 V, 100 Hz, the current will be

A capacitor of capacitance 100 muF and a coil of resistance 50 Omega and inductance 0.5 H are connected in series with a 110 V, 50 Hz AC source. Find the rms value of the current.

A coil having a resistance of 50.0 Omega and an inductance of 0.5 H is connected to an AC source of 110 , v, 50Hz . The rms current in the circuit is

A coil having a resistance of 50.0 Omega and an inductance of 0.5 H is connected to an AC source of 110 , v, 50Hz . The impedance of the coil is (appoximately)

A 20 watt electric lamp can be operated at a 50 V DC supply . Calculate the value of capacitance of the capacitor required to run the given lamp at 220 V , 50 Hz AC supply .