Question

The diagram of a household wiring starting from the supply line is shown. Study the diagram.
(a) Which wire does 'A' represent?
(b) Which wire does 'B' indicate?
(c) What is the potential difference between B and the Earth?

Answer 1

(a) A - Phase line which are in a phase of 180 degree.

(b) B - Earth line

(c) Zero - Potential difference between earth and any voltage source is zero only as earth has the capacity to nullify the voltage source which we apply in the circuit.