Physics · May / June 2021 · Paper 11 · Question 30
A 100 W lamp is switched on for five hours each day for three weeks. The cost of one unit of electricity is $0.24. How much does it cost to run the lamp for this time?
- A$0.36
- B$0.84
- C$2.52
- D$25.20
As printed in the paper
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Correct answer: C. $2.52
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