An electric kettle consumes 1 kW of electricpower when operated at 220 V. A fuse wire ofwhat rating must be used for it?(1) 1 A (2) 2 A (3) 4 A (4) 5 A

To determine the fuse wire rating required for the electric kettle, we need to calculate the current (I) using the formula:

I = P / V

Where: P = Power consumed by the kettle = 1 kW = 1000 W V = Voltage = 220 V

Substituting the values, we get:

I = 1000 W / 220 V I ≈ 4.55 A

Since the current is approximately 4.55 A, the fuse wire rating must be equal to or greater than this value to ensure proper protection.

Looking at the given options: (1) 1 A - This rating is too low and will not be sufficient. (2) 2 A - This rating is also too low and will not be sufficient. (3) 4 A - This rating is equal to the calculated current and will be sufficient. (4) 5 A - This rating is greater than the calculated current and will be sufficient.

Therefore, the correct answer is option (3) 4 A.