For a fuse rated at 10 A, the fuse melts if the current in the circuit exceeds A.

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Solution

The correct option is B 10
Fuse is used as a safety device as it melts when a large amount of current flows through it. Rating of a fuse tells us the maximum current that can pass through the fuse without melting it. So, the fuse would melt if the current in the circuit exceeds 10 A.

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For a fuse rated at 5A, the fuse melts if the current in the circuit exceeds 5A.

Complete the following sentences :

(a) A fuse is a short piece of wire of high ___ and of the material of low ___.

(b) A fuse wire is made of an alloy of ___ and ___ if the current in a circuit exceeds the current rating of the fuse wire, it ___.

(d) Higher the current rating, ___ is the fuse wire.

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