The Cost Of Electricity

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  • Created by: Samb0y
  • Created on: 19-05-14 18:52

1. 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)
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2. A KILOWATT-HOUR is the amount of electrical energy is used by a 1kW appliance left on for 1 Hour.

  • Depends
  • True
  • False

3. Which are the measurements of energy?

  • Power
  • Units
  • Units & kWh
  • kWh

4. 'Kilowatt-hours' mean the same as 'units'

  • True
  • False

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

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

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