5 Questions
Which unit of energy is used in the International System of Units (SI)?
Joule
What is the definition of a joule?
The amount of work done when a force of 1 newton displaces a mass through a distance of 1 meter.
Who is the joule named after?
James Prescott Joule
What is the symbol for joule?
J
Which of the following is another way to define a joule?
The energy dissipated as heat when an electric current of one ampere passes through a resistance of one ohm for one second.
Study Notes
Energy Units
- The unit of energy used in the International System of Units (SI) is the joule.
Definition of Joule
- A joule is defined as the energy transferred when a force of 1 newton is applied over a distance of 1 meter in the direction of the force.
Origin of the Joule
- The joule is named after James Prescott Joule, an English physicist.
Symbol for Joule
- The symbol for joule is J.
Alternative Definition
- A joule can also be defined as 1 kg·m²/s² (kilogram meter squared per second squared).
Test your knowledge about the unit of energy in the SI system, the joule, with this quiz! Explore the definition, calculation, and applications of joules in various fields.
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