Why is the switch for any electrical appliance always fitted on to the live wire?

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No current flows in the neutral wire

There will be a short circuit is the switch is in Earth's lead

The device cannot be switched off if it is in neutral lead

The device can only be isolated if the switch is in the live lead

answer is C.

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Detailed Solution

Concept: An electrical switch is wired so that while it is in the off position, there is no potential difference across the circuit's appliance.
A live wire essentially denotes the presence of some current at its tip, whereas a neutral wire denotes the absence of current. The current in the circuit essentially flows when these two establish contact with each other across an electrical appliance, and the equipment begins to operate. We will determine the appropriate option from those offered based on the facts mentioned above.
Hence, the correct option is 3 .

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