One horsepower equals how many watts?

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Multiple Choice

One horsepower equals how many watts?

Explanation:
Power is work per unit time, and horsepower is a traditional unit of power defined as 550 foot-pounds of work every second. To put that into watts, note that 1 foot-pound per second is about 1.356 watts. Multiply: 550 × 1.356 ≈ 745.8 watts, which rounds to 746 watts. So one horsepower is about 746 watts. The other options don’t match this standard conversion: 1000 W is 1 kilowatt, 500 W is smaller, and 7460 W is about ten horsepower.

Power is work per unit time, and horsepower is a traditional unit of power defined as 550 foot-pounds of work every second. To put that into watts, note that 1 foot-pound per second is about 1.356 watts. Multiply: 550 × 1.356 ≈ 745.8 watts, which rounds to 746 watts. So one horsepower is about 746 watts. The other options don’t match this standard conversion: 1000 W is 1 kilowatt, 500 W is smaller, and 7460 W is about ten horsepower.

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