Physicsmedium · Past Paper
How many Joules are there in 1 kilowatt-hour (kWh)?
A3.6 x 10^5 J
B3.6 x 10^6 J
C1000 J
D3600 J
✓ Correct Answer: B — 3.6 x 10^6 J
1 kWh = 1000 W * 3600 s = 3,600,000 Joules or 3.6 x 10^6 J.
Share this question
More from Physics
- When a body is thrown vertically upwards, what is its velocity at the highest point?
- Water is falling from a waterfall at the rate of 100 kg/s on the blades of a turbine. If the height of the fall is 100 m, the power delivered to the turbine is (g=10):
- Calculate the energy used by a 50W fan in 20 hours.
- What is the focal length of a lens with power -4.0 D?
- Two thin lenses of focal lengths 20 cm and 25 cm are placed in contact. The effective power of the combination is: