Question

The power rating of an electric oven is 220 V; 2 kW. If it is used in a domestic electric circuit of current rating of 5A, what result do you expect? Justify your answer with necessary calculations.

Answer 1

The electric oven's compatibility (with a power rating of 220V and 2 kW) with a domestic electric circuit rated at 5A involves calculating the current draw. Using the formula:

Power (P) = Voltage (V) × Current (I)

Given:

• Voltage (V) of the electric oven = 220V
• Power (P) of the electric oven = 2kW (2000W)
• Current rating of the domestic electric circuit = 5A

We can rearrange the formula to find the current (I):

I = VP

Substitute the given values:

I = 9.09A

The electric oven requires about 9.09A of computed current (I). This exceeds the domestic electric circuit's current rating of 5A. The electric oven is unsuitable for this domestic circuit, as it may overload and trip the circuit breaker.
A lower-power electric oven or upgrading the circuit to handle higher current loads would be necessary to avoid this issue.