An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be :

The p.d. across a 3Ω resistor is 6 V. The current flowing in the resistor will be:

A car headlight bulb working on a 12 V car battery draws a current of 0.5 A. The resistance of the light bulb is:

When a 4Ω resistor is connected across the terminals of a 12 V battery, the number of coulombs passing through the resistor per second is :

Ohm’s law gives a relationship between: