Question

The current flowing in appliance connected to a 120 V source is 2 A. How many kilowatt-hours of electrical energy does the appliance use in 4 h?

Answer 1

`W=960`

Explanation:

Given:

`V=120V`
`I=2A`
`4kWh=?`

For one hour:

`W=I*V`

`W=2*120`

`W=240`

For four hours:

`W=240*4`

`W=960`