## An electric kettle consumes 1 kW of electric power when operated at 220 V. A fuse wire of what rating must be used for it?

## (a) 1 A

## (b) 2 A

## (c) 4 A

## (d) 5 A

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Answer:
**

The
**
rating of fuse wire
**
must be
**
slightly greater
**
than the
**
current flowing through the device.
**

Given,

- Power, P = 1 kW = 1000 W
- Voltage , V = 220 V

We know that,

**
Current, I = P / V
**

Therefore,

**
I =
**
1000 / 220 =
**
4.5 A
**

So,
**
rating fuse wire = 5 A
**

So, the
**
correct answer is (d).
**

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