How many kilowatt-hours are needed to run a 10,000-watt speaker system for 1 hour?

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Multiple Choice

How many kilowatt-hours are needed to run a 10,000-watt speaker system for 1 hour?

Explanation:
Energy in kilowatt-hours is found by multiplying power in kilowatts by time in hours. Convert 10,000 watts to 10 kilowatts, then multiply by 1 hour: 10 kW × 1 h = 10 kWh. So 10 kilowatt-hours are needed. The other options would require more time at the same power (or more power for the same time)—for example, 100 kWh would be 10 kW for 10 hours or 100 kW for 1 hour, which isn’t the scenario given.

Energy in kilowatt-hours is found by multiplying power in kilowatts by time in hours. Convert 10,000 watts to 10 kilowatts, then multiply by 1 hour: 10 kW × 1 h = 10 kWh. So 10 kilowatt-hours are needed. The other options would require more time at the same power (or more power for the same time)—for example, 100 kWh would be 10 kW for 10 hours or 100 kW for 1 hour, which isn’t the scenario given.

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