Question

An electric oven of 2 kW power rating is operated in a domestic electric circuit that has a current rating of 5A. If the supply voltage is 220V, what result do you expect?

• A. circuit will be damaged
• B. fuse will blow
• C. both
• D. none

Answer 1

The correct option is C both

Given,
Power of the oven $\left(P\right)=2kw=2\times 103W$
Voltage supplied $\left(V\right)=220V$
Current $\left(I\right)=?A$
Power $=V\times I$
$\Rightarrow I=P/V=2\times 103/220=9.09A$
Since the domestic electric circuit has a current rating of 5A, the flow of 9.09 A by the Oven exceeds the safe limit. Here, fuse will blow and break the circuit.