Get ready for the NCEA Level 1 Energy Test. Utilize flashcards and multiple choice questions with clear explanations and hints. Prepare for success!

Multiple Choice

What is the unit of measurement for electrical power?

Power is the rate at which electrical energy is used or produced, and its unit is the watt. One watt means energy of one joule used every second. In electrical terms, power equals voltage times current (P = V × I). So if a circuit has 2 volts and 3 amperes, the power is 6 watts. The other terms measure different things: volt is voltage, ampere is current, and ohm is resistance.

Power is the rate at which electrical energy is used or produced, and its unit is the watt. One watt means energy of one joule used every second. In electrical terms, power equals voltage times current (P = V × I). So if a circuit has 2 volts and 3 amperes, the power is 6 watts. The other terms measure different things: volt is voltage, ampere is current, and ohm is resistance.