In a ‘three pin plugs’, why is the earth pin made longer and thicker than the other pins?

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For good look

For safety

To reduce heat losses

For proper electric position

answer is B.

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Detailed Solution

Option B is correct because the live pin, neutral pin, and earth pin are the three-pin plugs.
The reason the earth pin is larger and thicker than the live and neutral pins is so that it will ground any undesired charges when the plug is inserted before the live and neutral pins do. This will make sure that if we connect the earth first, our safety and the device's safety will both be increased in the event of a malfunction. The earth pin is thicker as well, making it impossible for it to accidentally fit into the socket's holes for the live or neutral connection.
Therefore, this improves safety.

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