Which of the following is used as a safety device?

Battery

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Fuse

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Filament

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Wire

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Solution

The correct option is B Fuse
The main part of a fuse is a fuse wire. It is an alloy of suitable metals. It has a low melting point. It melts when a large amount of current flows through it and hence breaks the circuit. Therefore, the fuse is used as a safety device.

Suggest Corrections

1.	An unbroken path through which electric current can flow	.....................
2.	A very thin wire made of a special material (such as tungsten) which glows in a bulb	.....................
3.	Tightly wound coils found in appliances which heat up	.....................
4.	A safety device used to prevent an over flow of electric current	.....................
5.	A device used to open or close an electric current	.....................