Question on: WAEC Physics - 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
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Correct Option: C
Cost = P(Kwh) x Cost per KW
= (\frac{60 \times 24}{1000} \times N5 = N7.2)
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