One horsepower equals approximately how many watts?

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Multiple Choice

One horsepower equals approximately how many watts?

Explanation:
Converting horsepower to watts tests your ability to translate common power units into the SI unit. A mechanical horsepower is defined as 550 foot-pounds per second. To convert to watts, use that 1 watt equals 1 joule per second and 1 foot-pound equals about 1.3558 joules. So horsepower in watts is 550 × 1.3558 ≈ 746 watts. This is the standard approximate value used in practice, with the exact figure often listed as 745.7 W. The other options don’t align with this conversion, since they sit noticeably below or above the established value. For context, metric horsepower is defined as about 735.5 W, which is a different definition.

Converting horsepower to watts tests your ability to translate common power units into the SI unit. A mechanical horsepower is defined as 550 foot-pounds per second. To convert to watts, use that 1 watt equals 1 joule per second and 1 foot-pound equals about 1.3558 joules. So horsepower in watts is 550 × 1.3558 ≈ 746 watts. This is the standard approximate value used in practice, with the exact figure often listed as 745.7 W. The other options don’t align with this conversion, since they sit noticeably below or above the established value. For context, metric horsepower is defined as about 735.5 W, which is a different definition.

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