Of the three connecting wires in a household circuit
(i) Which two of the three wires are at the same potential?
(ii) In which of the three wires should the switch be connected?

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Solution

Explanation for part (i)
Neutral and the earth wire are at the same potential, because the earth wire and electrical wire are connected together
Explanation for part (ii)
As we know that the switch is connected to high potential that is live wire.
So, switch should be connected in live wire.

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