A car headlamp of 48 W works on the car battery of 12 V. The correct fuse for the circuit is

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15A

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Solution

The correct option is C 5A
Answer is A.
Fuses are safety devices that are to be built into our electrical system.
In this case, the car headlamp is $48 W$ and the voltage is $12 V$ .
We know that power $P = V \times I$
$∴ I = \frac{P}{V} = \frac{48}{12} = 4 A$
This is the maximum current that should pass through the device. If the current is more than this then the fuse must disconnect the circuit. Hence, the fuse of 5 A should be connected to the circuit.

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A car headlamp of 48 W works on the car battery of 12 V. The correct fuse for the circuit of this car headlamp will be :

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