PhysicsElectrical energy and powerWAEC
A 500 W electric iron is used for 4 hours. At ₦80 per kWh, find the cost.
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Answer: D. ₦160
0.5 kW × 4 h = 2 kWh; 2 × 80 = ₦160.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.