Question

An electric heater of power 3kw is used for 10h how much energy does it consume​

Answer 1

Answer:

Explanation: 30 kwh

        and 1 kwh = 36 x (10 to the power of 5)

                              i.e , 108 x 10 raised to power 6

Answer 2

Answer:

(i). Energy = Power × time

= 3kw × 10hrs

= 30kwH.

(ii). Energy = Power × time

= 3kj × 10× 60 × 60 secs.

= 108000 joules.

Hope it helps.