Physics 5054 · O Level · Power

Power — practice question

What amount of energy, in kilowatt-hours, is consumed by a $1000\,\text{W}$ heater when it is connected to a $230\,\text{V}$ supply for $30$ minutes?

  • A$0.30\,\text{kW h}$
  • B$0.50\,\text{kW h}$
  • C$30\,\text{kW h}$
  • D$120\,\text{kW h}$

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