1 horse power is equal to approximately ______ watts.

750

The correct answer is option 3. 750.

1 horsepower (hp) is approximately equal to 750 watts.

Horsepower is a unit of power commonly used in the United States and other countries for measuring the output power of engines and motors. It is defined as the amount of work done or energy expended in a certain amount of time, typically one minute. In contrast, the watt (W) is the standard unit of power in the International System of Units (SI), defined as one joule per second. The conversion factor between horsepower and watts is approximately 746 watts per horsepower. Therefore, 1 horsepower is approximately equal to 746 watts.