Question

Define one joule of energy.

Answer 1

Hint: Energy of a body is stated as the force exerted by the body over a certain distance or displacement. Energy is the system unit of electrical, mechanical, and thermal energy. One joule is the derived S.I unit of the system.

Complete step-by-step answer:
One joule of energy is the amount of work done when a force of one newton is aced through a distance or displacement of one meter. In electrical terms, one unit of electrical energy is equal to the work done when a current of one ampere is passed through a resistance of one ohm for one second.

Additional Information: The S.I unit used to measure energy or work is Joule. One Joule is equal to the energy used to accelerate a body with a mass of one kilogram using one newton of force over a distance or displacement of one meter.
One Joule is equivalent to one Watt-second. The unit joule is named after the British scientist James Prescott joule who demonstrated that heat is a form of energy and he also stated that energy is never destroyed but maybe converted from one form into another.
One Joule is also equivalent to one watt of power radiated or dissipated for unit second.

Note: joule is a derived SI unit of energy. One joule is equivalent to one watt second, ${{10}^{7}}$ ergs, $0.2390$ calories, $0.738$ foot-pound. The symbol of joule is $J$. In some applications, the British thermal unit $(Btu)$ is used to express energy. One $Btu$ is equivalent to approximately $1055$ joules.