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7.1 Work done

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Question 11
F

An electric heater has a power of 2 kW. It is switched on for 30 minutes.

How much energy does the heater transfer, in kW h\text{kW h}kW h?

[1]
A

1 kW h1\ \text{kW h}1 kW h

B

4 kW h4\ \text{kW h}4 kW h

C

15 kW h15\ \text{kW h}15 kW h

D

60 kW h60\ \text{kW h}60 kW h

Markscheme

7.1 Work done Questions

  1. GCSE
  2. /Physics
  3. /7.1 Work done

44 exam-style questions on OCR GCSE Physics 7.1 Work done, covering 7.1.1 Conservation of energy in a closed system, 7.1.2 Energy stores and transfers, 7.1.3 Energy changes by heating, forces and current, 7.1.4 Quantifying energy transfers in a system, and 7.1.5 Kinetic, elastic and gravitational potential energy. Each one has a worked solution and a mark scheme showing where the marks go.

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