Question

Explain the reason why metal cases of electric appliances are earthed.

Answer 1

Explanation:

1. The metallic body of electric appliances is connected to the earth using earth wire so that any leakage of electric current is transferred to the ground. This prevents any electric shock to the user.
2. Grounding wires serve as an alternate path for the current to flow back to the source rather than go through anyone touching a dangerous appliance or electrical box.
3. Some appliances, such as vacuum cleaners and electric drills, do not have an earth wire.
4. The ground is an attractive place for electricity to flow because it is positively charged.