Question

Explain the function of fuse in a domestic electric circuit ? An electric oven having power rating 2000 W,220 V is used in an electric circuit, having a fuse of 5 A rating. What is likely to happen when the oven is switched on? Explain.

Answer 1

It prevents the electric circuits and appliances from possible damage by stopping the flow of unduly high electric current.

Here,P=2000W,V=220V

Using

P = Vl

I=P/V=2000/220=9.09

Since the current flowing through the oven is larger than the fuse rating (5A). the fuse wire melts and breaks the circuit, thus protecting the circuit