A fuse is used in an electrical appliance :

To earth the appliance

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To protect the appliance and its cable

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To change the efficiency of the applicance

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To change the current rating of the applicance

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Solution

The correct option is D To protect the appliance and its cable
Fuse is a device used to prevent overheating of appliances due to a sudden increase in the current in the circuit.
It protects the device and the user. When the electric current is higher than the normal current needed by a circuit, the fuse blows up and breaks the circuit.
Hence, it protects the circuit from a power overload.

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