Question

derive the expression for kwh in science class 9​

Answer 1

Answer:

Basically ,KWH is Commercial Unit Of Energy✔

Find:-The relation between commercial unit of energy (kWh) and SI unit of energy (joule) is-

1kWh = 1000 W × 1h.

1 watt = 1 joule/1 sec

= 1000 × 60 × 60

= 3.6 × 10^6 Joule

Hence, 1KWH = 3.6×10^6 Joule ✔