Question

How many joules of energy are in a kilowatt-hour?

   How many joules of energy are in a kilowatt-hour?

Pearson Physics

Pearson Physics

James S. Walker 2013 Edition

Chapter 6, Problem 113

Instant Answer

Solved by Expert Prabhakar Kumar

02/19/2023

Step 1

1 kilowatt is equal to 1000 watts (W). 1 watt is equal to 1 joule per second (J/s). So, 1 kilowatt-hour is equal to 1000 joules per second used for 1 hour. 1 hour is equal to 3600 seconds. Show more…

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Key Concepts

Joule

A joule is the SI unit of energy defined as the work done when a force of one newton displaces an object by one meter. It is a fundamental unit used universally in physics to quantify energy in mechanical, electrical, and thermal systems.

Kilowatt-hour

A kilowatt-hour is a unit of energy commonly used to measure electrical energy consumption. It represents the amount of energy used when a device rated at one kilowatt runs for one hour, making it a practical unit for billing and energy measurement in everyday applications.

Unit Conversion

Unit conversion involves translating a quantity expressed in one unit into another unit by using established conversion factors. In this context, converting kilowatt-hours to joules requires understanding the relationship between power and energy over time, with one kilowatt-hour equaling 3.6 million joules.

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