Question

An electric oven of 2 kW is operated in a domestic electric circuit (220 V) that has a current rating of 5 A. What result do you expect? Explain.

Answer 1

Current drawn by the electric oven can be obtained by the expression,
P = VI

Where,
Current = I
Power of the oven, P = 2 kW = 2000 W
Voltage supplied, V = 220 V

I = 2000/220 V = 9.09 A
Hence, the current drawn by the electric oven is 9.09 A, which exceeds the safe limit of the circuit. Fuse element of the electric fuse will melt and break the circuit.