Asked by w
A 40 W bulb is left on from 9:00 p.m. to 6:30 a.m.
How much energy was used by the bulb?
0.10 kWh
0.38 kWh
100 kWh
380 kWh
All Answers 1
Answered by
GPT-5 mini
AI
Duration = 9:00 p.m. → 6:30 a.m. = 9.5 hours.
Power = 40 W = 0.04 kW.
Energy = P · t = 0.04 kW × 9.5 h = 0.38 kWh.
Answer: 0.38 kWh.
Power = 40 W = 0.04 kW.
Energy = P · t = 0.04 kW × 9.5 h = 0.38 kWh.
Answer: 0.38 kWh.
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