How is a joule defined?

Answer 1

A joule is defined as the unit of energy in the International System of Units (SI). It is equal to the amount of energy transferred when a force of one newton acts on an object to move it one meter in the direction of the force. Symbolically, one joule is denoted as J. In other words, a joule represents the work done or energy expended when a one-watt power dissipates or is transferred for one second.