Question

Define 1KWh. Give the relation between 1kwh and Joule

Answer 1

Answer:

One kilowatt hour is defined as the energy consumed by power consumption of 1kW during 1 hour:

1kWh = 1000Joules.

Explanation:

Answer 2

_____________________

Required Answer:-

If we have a machine that uses 1000 J of energy every second. If this machine is used continuously for one hour, it will consume 1 kW h of energy.

Thus, 1 kW h is the energy used in one hour

at the rate of 1000 J s–1 (or 1 kW).

1 kW h = 1 kW ×1 h

= 1000 W × 3600 s

= 3600000 J

1 kW h = 3.6 × 106 J.

The energy used in households

and commercial establishments are usually

expressed in kilowatt hour. For example,

electrical energy used during a month is

expressed in terms of ‘units’. Here, 1 ‘unit’

means 1 kilowatt hour.

__________________________