A ceiling fan uses 0 point 4 5 kWh of energy in 6 hours. What is the power rating of the fan?

Power is energy divided by time: 0.45 kWh ÷ 6 hours = 0.075 kW. Since 1 kW = 1,000 W, this is 75 W, so the correct choice is 75 W.

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