Previous year MCQs

General science UPPSC 2007 GS-I
Question

In Three pin electric plug longest pin should be connected with:

Answer & Solution

Answer: (Detailed Solution Below)

Option A: Earth end

Detailed Solution:

The correct answer is “Earth end”.
The longest pin in a three-pin plug is designed to connect to the earth or ground. This ensures that the device is grounded before the live and neutral connections are made, enhancing safety by preventing electric shocks.

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