1. Which is true?
- A 50kW appliance transfers 5000 J in 1 second p
- A 5kW appliance transfers 5000 J in 1 second
- A 5kW appliance transfers 500 J in 1 second
- kW = J x 10
1 of 10
Other questions in this quiz
2. 'Kilowatt-hours' mean the same as 'units'
3. Which formula is correct - Cost =
- No. of Units x Price of Units
- No. of Units x 2(Price of Units)
4. Energy is usually measured in what?
- Joules (j)
- Watts (w)
5. Each unit costs 14p. For how long can a 6kW heater be used for?
- 2 hours
- 10 minutes
- 7 minutes
- 1 hours