Physics · Oct / Nov 2018 · Paper 11 · Question 31
The power of an electrical heater is 3.0 kW. The heater is switched on for a time of 2 hours and 30 minutes. The cost of using the heater for this time is 120 c. What is the cost of 1.0 kW h of electrical energy?
- A16 c
- B17 c
- C40 c
- D48 c
As printed in the paper
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Correct answer: A. 16 c
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