A 60 W lamp is on for 5 hours. How much energy does it transfer, in kilowatt hours?
Answer and explanation
Correct answer: D. 0.3 kWh, from 0.06 kW x 5 h
- Step 1: Convert 60 W to 0.06 kW. Step 2. 0.06 x 5 = 0.3. Answer: 0.3 kWh. Why not the others: 300 forgets to convert to kW; 12 divides; 65 adds.
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