A household refrigerator is rated 200 watts. If electricity costs 5k per kWh, what is the cost of operating it in 20 days?
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Correct Answer: Option A
Explanation:
Energy(kWhr) = 200 x 10-3 x 20 x 24
= 96kwhr
1 kwhr cost 5 kobo ; 96 kwhr will cost
5 x 96 = 480 kobo
= N4.80
Energy(kWhr) = 200 x 10-3 x 20 x 24
= 96kwhr
1 kwhr cost 5 kobo ; 96 kwhr will cost
5 x 96 = 480 kobo
= N4.80