When 100 V D.C. is applied across a coil, a current of 1A flows through it. When 100 V A.C. of frequency 50 Hz is applied to the same coil only 0.5 A current flows through it. Calculate resistance, and self inductance of the coil

A current of 0.4 A flows through a lamp, when a P.D. of 230 V is applied to it. Find the power of the lamp.

If a P.D. of 12 V is applied across a 3 omega resistor then the current passing through it is

The current in a coil changes from 0 to 20 A in 0.5S. If the induced emf is 80V, the self inductance of the coil is

A current of 0.24 A flows through a conductor when a potential difference of 24 V is applied between its two ends. What is its resistance?

A capacitor is used with an A.C. source of 110 V and frequency 50 Hz. If the maximum current in the circuit is 4.89 A, calculate the capacitance

The resistance of a device is 100 Omega . Find the current through it when a potential difference of 20 V is applied across it. To pass the same current through a device having resistance 200 Omega , how much potential difference should be applied across it?

The resistance of a conductor is 10 ohm. Find the current through it when a potential difference of 2 V is applied across it. To pass the same current through a conductor of resistance 40 Omega , how much potential difference should be applied across it?

The opposition offered by an inductance to flow of A.C. current through it is

When the voltage applied across a bulb is 220 v the current passing through the bulb is 0.1 A . Find the power of the bulb.