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

Which quantity uses joules per second as its unit?

Power is the rate at which energy is transferred or used. It is measured in joules per second, which is the unit called a watt. This means if something uses or transfers 1 joule of energy every second, its power is 1 watt. Energy, by contrast, is the total amount of work that can be done, measured in joules, not per unit time. Force is measured in newtons and relates to pushing or pulling, not to energy per time. Charge is measured in coulombs and is about the amount of electric property, not the rate of energy transfer.

Power is the rate at which energy is transferred or used. It is measured in joules per second, which is the unit called a watt. This means if something uses or transfers 1 joule of energy every second, its power is 1 watt.

Energy, by contrast, is the total amount of work that can be done, measured in joules, not per unit time. Force is measured in newtons and relates to pushing or pulling, not to energy per time. Charge is measured in coulombs and is about the amount of electric property, not the rate of energy transfer.