Answer:

a) Live

b) Body.

Explanation:

a) If the fuse is linked to a neutral wire rather than a live wire, and the fuse blows, the appliances remain connected to the live wire and the current continues to flow without interruption.

b) When an electric appliance’s metallic body is entwined with an earth wire, any leakage current is directly passed to the ground instead of causing a severe electric shock. So electric gadgets must be earthed.