Find the cost of running a 60W lamp for 24 hours. If 1kW hr cost
PHYSICS
WAEC 2004
Find the cost of running a 60W lamp for 24 hours. If 1kW hr cost 5 naira
- A. 14.4 naira
- B. 12.5 naira
- C. 7.2 naira
- D. 2.0 naira
Correct Answer: C. 7.2 naira
Explanation
Cost = P(Kwh) x Cost per KW
= \(\frac{60 \times 24}{1000} \times N5 = N7.2\)
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