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.

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.

Class 10 | Household Circuits | ICSE | Physics | Selina

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.

Solution:

The accompanying diagram depicts the most typical fuse setup. The fuse wire is strung between the two metallic terminals T1 and T2 in a porcelain holder. In this fuse setup (since porcelain is an insulator of electricity). This holder is designed to fit into a porcelain socket with two metallic terminals to which the circuit’s live wire is connected.

Copper has a high melting point and a low resistivity. As a result, a copper wire cannot be used to replace the fuse.

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