Question

An electric oven consumes 1kw electric power when operated at 220v.Write the capacity

Answer 1

Assuming this is referring to the capacity of the circuit.

In this scenario  the capacity of the circuit must be greater than or equal to the current drawn by the oven.

We know power = VI

Therefore,

1kW = (220V)I

1000W/ 220V = I

I = 4.5 A (approx)

However, domestic circuits are either 5A or 15A and therefore this circuit likely has a capacity of 5A.

( The answer can still be 15A however due to the vagueness of the question we shall assume that 5A is the answer as the question doesn't provide too many details.