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.

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?

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 conductor carries a current of 0.4 A when a potential difference of 10 V is applied across it. Find its resistance.

An electric current of 5 A flows through a wire of resistance 41.8 ohm Find the time to obtain heat of 3000 cal.

The potential difference of 260 V is applied at the domestic circuit. An LED is connected to the circuit. An electric current of 0.35 A flows through the LED. Then (i) Power of LED (ii) Units consumed if the bulb is operating for 10 hr.

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?

A current of 800 mA is passed through an electric lamp for one minute. Find the number of electrons passing through it if the charge of electron is 1.6 xx 10^-19 C.

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?

An electric tungsten bulb is connected into a home circuit. The home electric supply runs at 220 V potential difference. When switched on, a current of 0.45 A flows through the bulb What must be power (wattage)of the bulb? if it is kept on for 10 hours, how many units of electricity will be consumed?