1 volt is the difference in potential that 1 coulomb of charge requires 1 joule of energy in order to cross, or gives up 1 joule of energy in crossing, depending on the sign of the charge and whether it climbs or falls through the 1 volt.
1 volt = 1 joule per coulomb
A volt is a unit of measurement for electric potential difference, defined as one joule of energy per one coulomb of charge. It is named after Alessandro Volta, who invented the first chemical battery in the 1800s. Understanding volts is essential for grasping how electrical circuits and devices operate.
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