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Lesson: Units of Energy

In this lesson, we will learn how to convert between the S.I. unit of energy, joules, and the units of energy more commonly used to describe energy production, such as the kilowatt-hour.

Sample Question Videos

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03:19

Worksheet • 2 Questions • 2 Videos

Q1:

What is 7.8 kWh in joules?

Q2:

Which of the following is the correct definition of a watt-hour?

AA watt-hour is the amount of energy transferred by a process that has a power of 1 watt and acts for 1 hour.
BA watt-hour is the amount of time it takes for a 1-watt device to transfer 1 joule of energy.
CA watt-hour is a measure of the power of a process that is equivalent to the transfer of 1 joule of energy in 1 hour.
DA watt-hour is the amount of energy that an electrical device transfers in 1 hour.
EA watt-hour is the amount of time it takes for a process to increase in power from 0 watts to 1 watt.

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Lesson: Units of Energy

Sample Question Videos

Worksheet • 2 Questions • 2 Videos

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