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Questions and Answers
Which unit of energy is used in the International System of Units (SI)?
Which unit of energy is used in the International System of Units (SI)?
- Joule (correct)
- Newton
- Ampere
- Ohm
What is the definition of a joule?
What is the definition of a joule?
- The energy required to move an object against gravity.
- The amount of work done when a force of 1 newton displaces a mass through a distance of 1 meter. (correct)
- The energy dissipated as heat when an electric current of one ampere passes through a resistance of one ohm for one second.
- The energy produced by the collision of two objects.
Who is the joule named after?
Who is the joule named after?
- Isaac Newton
- James Prescott Joule (correct)
- Michael Faraday
- Albert Einstein
What is the symbol for joule?
What is the symbol for joule?
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Which of the following is another way to define a joule?
Which of the following is another way to define a joule?
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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).
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