Which is the value of 1 kWh of energy converted into joules
Which one of the following is the value of 1 kWh of energy converted into joules?
- 1.8 × 106 J
- 3.6 × 106 J
- 6.0 × 106 J
- 7.2 × 106 J
Answer
1 W = 1 J/s
Since there are 60 seconds in a minute and 60 minutes in a hour,
1 h = 60 × 60 s = 3600 s
1 kWh = 103 J/s × 3.6 × 103 s
1 kWh = 3.6 × 106 J
The correct option is B.