When 100 V DC source is connected across a coil a current of 1A flows through it. When 100 V, 50 Hz AC source is applied across the same coil only 0.5 A flows. Calculate the resistance and inductance of the coil.

When 200 volts dc is applied across a coil a current of 2A flows through it. When 200 V ac of 50 Hz is applied to the same coil only 1A flows. Calculate the resistance impedance and inductance of the coil.

A 50V battery is connected across 10 ohm resistor and a current of 4.5A flows. The internal resistance of the battery is

A student connects a long air cored coil of maganin wire to a 100 V dc source and records a current of 1.5 A. When the same coil is connected across 100 V, 50 Hz ac source the current is reduces to 1.0 A. (a) Give reason for your observation (b) Calculate the reactance of the coil.

An 80 V, 800 W heater is to be operated on a 100 V, 50 Hz supply. Calculate the inductane of the coil required.

A coil draws a current of 1A and a power of 100W from an ac source of 110 V and 50 Hz. Find the resistance and the inductance of the coil?