(a) "The third wire of earth connection is very important in domestic electric appliances." Justify this statement.

(b) List two precautions to be taken to avoid the overloading of domestic electric circuits.

(a) The third wire of earth connection is very important in domestic electric appliances because it provides a safe path for the electric current to flow to the ground in case of a fault. This helps to prevent electric shocks.

(b) Two precautions to be taken to avoid the overloading of domestic electric circuits are:

(i) Avoid using too many appliances at the same time.

(ii) Use a fuse or a circuit breaker to prevent overloading.