Physics
Why is the metal covering of an electrical appliance earthed?
Household Circuits
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Answer
The metal covering of an electrical appliance is connected to the earth wire to protect from electric shock. Sometimes due to breaking of insulation of wires, live wires come in contact with the body of the appliance which can cause a fatal shock when touched. If the appliance is earthed, the current will pass to the earth and the person remains protected from getting any electrical shock.
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