Question

The value of 1 Kilo Watt Hour is
(a) 1.8 X 105J
(b) 3.6 X 106J
(c) 5.4 X 108J
(d) 7.2 X 1010J

Answer 1

Answer:

(b) 3.6 x 10^6 J

Explanation:

Kilowatt-hour is the commercial unit of energy. It show the consumption of 1000 J per hour.

Energy = Power x Time

We will take power in kilowatts (kW) and time in hours.

So,

Energy = 1000 W x 3600 s, because 1 kW = 1000 W and 1 hour = 3600 sec

Energy = 3.6 x 10^6 J