Other questions in this quiz

2. Each unit costs 14p. For how long can a 6kW heater be used for?

  • 2 hours
  • 10 minutes
  • 7 minutes
  • 1 hours

3. Energy is usually measured in what?

  • Joules (j)
  • Watts (w)
  • Power

4. Which formula is correct to work out - No. of Units (kWh) used =

  • Power (in kW) x Time (in hours)
  • Power (in J) x Time (in hours)
  • Power (in kW) x Time (in seconds)
  • Time (in kW) x Power (in seconds)

5. Which is true?

  • A 5kW appliance transfers 5000 J in 1 second
  • A 5kW appliance transfers 500 J in 1 second
  • A 50kW appliance transfers 5000 J in 1 second p
  • kW = J x 10

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »See all Equations and Formulae resources »