Q21 of 330 Page 19

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

As we know that

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20

Write down the formula which states the relation between potential difference, current and resistance.

 20

The potential difference between the terminals of an electric in 240 V and the current is 5.0 A. What is the resistance of the electric iron?

 22

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:

 23

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 :