A kilowatt (KW) is equivalent to

• A. .67 amperes at a voltage of 120
• B. 746 watts
• C. 1.34 horsepower
• D. 1,000 megacycles

Answer: (C)

Power is the rate of doing work, and kilowatt is a large unit of power equal to 1000 watts. A common conversion is that one mechanical horsepower is defined as 746 watts, so 1000 watts (a kilowatt) equals 1000/746, which is about 1.34 horsepower. That’s why the kilowatt is equivalent to roughly 1.34 hp. The other statements mix up concepts: 746 watts is only 0.746 kilowatts, not 1 kilowatt; at 120 volts, 1 kilowatt would require about 8.33 amperes (P = V × I, so I ≈ 1000/120), not 0.67 amperes; and megacycles measure frequency, not power, so they aren’t equivalent to a kilowatt.