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Heating Effect of Electricity

Which is the ...

Question

Which is the component that breaks the electric circuit in case of excess current?

A

Fuse wire

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B

Voltmeter

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C

Earth wire

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D

Ammeter

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Solution

The correct option is A
Fuse wire

A fuse is a short length of wire designed to break the circuit in case of excessive current. Temperature increases with current, and after a point the fuse melts thereby breaking the circuit. Fuse wire is made up of a material which has low melting point, thereby saving electrical applicances from damage.

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Which is the component that makes an electric circuit open in case of an excess current?

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