Ohm: When a potential difference of one volt is provided, a conductor with a resistance of one ohm allows one ampere of current to flow through it. The SI unit for electrical resistance is ohms. Volt: The electrical unit of voltage or potential difference is called a volt (V). When a shift of 1 joule of potential energy occurs when transporting a charge of 1 coulomb, we obtain a potential difference of 1 volt. Moving a one-coulomb electric charge over a one-volt potential difference requires one joule of labor. Per coulomb, one joule equals one volt. Ampere: The rate of electron flow or current in an electrical conductor is measured in amperes. An electrical charge passing past a given place at one coulomb per second is represented by one ampere of current.
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