A 240-volt single-phase resistive heater draws 25 amperes. What power does it use?
- 6,000 watts
- B10,392 watts
- C9.6 watts
- D265 watts
Why A is correct
For a resistive single-phase load, power equals voltage times current. Multiplying 240 volts by 25 amperes gives 6,000 watts; the square-root-of-three multiplier belongs to balanced three-phase calculations.