Question

Write the relationship between kilowatt-hour and joule

Answer 1

Hi Friend ✋✋

The relationship between " kWh " and " Joules " are :

1 kWh = 1000 Watt × [ 60 × 60 ] seconds

1 kWh = 10³ W × 3600 s

1 kWh = 10³ W × ( 3.6 × 10³ ) s

1kWh = ( 3.6 × 10^6 ) Ws

1kWh = 3.6 × 10^6 J


hope it helps

Answer 2

Relation between kilowatt hour and Joule.

If energy is consumed at the rate of 1 kilojoule / second at the rate of 1 kilowatt and this continues for 1 hour, then the total energy consumed is called one kilowatt hour.

Thus,

1 kWh = 1 kW × 1 hour

         = ( 1000 W ) × ( 3600 secs )

         = ( 1000 J / s ) × ( 3600 secs )

         = ( 3600000 joules )

         = 3.6 × 10⁶  J.

Hence, 1 kWh = 3.6 × 10⁶