Describe with the aid of a diagram some form of a fuse which is used in the electric lighting circuit of a house.Give two reasons why a fuse must not be replaced by an ordinary copper wire.
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Updated on : 2022-09-05
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The above figure shows the most common fuse arrangement in which the fuse wire is stretched between the two metallic terminals T1 and T2 in a porcelain holder.This holder fits into a porcelain socket having two metallic terminals to each of which the live wire of the circuit is connected. A fuse must not be replaced with a copper wire because copper has very low resistivity and high melting point. So it will not melt quickly because it will not produce much heat as compared to fuse wire.