Question

How does use of a fuse wire protect electrical appliances?

NCERT Class X
Science - Exemplar Problems

Chapter_Electricity

Answer 1

If heavy current flows through the wire, the fuse that has a low melting point melts and breaks the circuit and thence electrical appliances are safe.

Answer 2

Hi _______

An electrical fuse works by breaking the circuit when there is a fault in an appliance that causes too much current to flow.

The wire within the circuit melts due to the heat generated when the current going through the circuit is too great.

How it work?

As the current in a wire increases so does the heat generated. A fuse is simply a thinner piece of wire in the circuit. If the current gets too high the thin wire will melt and stop the current.
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