Answer the following questions related to earthing used in domestic electrical wiring.
PHYSICS · Multi-part · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current
Problem
Answer the following questions related to earthing used in domestic electrical wiring.
(i) Define earthing in the context of a household electric circuit.
(ii) State two reasons why earthing is considered an essential safety feature in all metal-bodied electrical appliances.
(iii) What is the usual colour coding for the earth wire in Indian wiring practice? State the potential of the earth wire with respect to the neutral wire during normal operation.
(iv) List any two situations in which proper earthing can prevent an electric shock to a user.