Question

Of the three connection wires in a household circuit:

(1) Which two of the three wires are at the same potential?

(2) In Which of the three wires should the switch be connected?

Answer 1

1. The two wires which are at the same potential

(a) Neutral wire (b) Earth wire

2. From the three connection wires, we must connect the switch from the live wire because when we switch off the appliance then it disconnects from the electrical circuit, thus preventing the electric shock from the electric appliance.