Find the time required to deposit electrolytically 2 gm of gold by passing a current of 2 A. The e.c.e.of gold is 0.0006812 gm/coulomb.

The potential at a point is 20 V. What is the work done to bring a charge of 0.5 C from infinity to this point.

What is the charge, in Coulombs, which passes a point in a circuit in 1 minute when a current of 3 A is flowing?

Three resistors 2 Ω, 3Ω and 4Ω are connected so that the equivalent resistance is 9Ω. The resistors are connected 

In the circuit shown the bulb marked 2R has twice the resistance of the bulb marked R. Compared with bulb 2R, the current in bulb R and its brightness compared to the other bulb, is 

Two light bulbs P and Q are identical in all respects, except that P's filament is thicker than Q's. If the same potential difference is applied to each, then

What is the maximum power that an appliance should have if it is connect to a 230V supply by a 5A cable .

The quantity of heat generated in a conductor when a current flows through it is directly proportional to the
(a) resistance of the conductor.
(b) current carried by the conductor.
(c) time for which the current flows

What is the potential difference, in volts, required to pass a current of 3 A through a resistor of 6 ohms?

 A current of 5A is passed through a resistance of 84 Ω. Calculate the amount of heat given out by it in one minute? (J = 4.2 joules/ calories).