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What is the SI unit of potential difference?

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Answer: Work done while a positive electric charge is moved from one point to another is called a potential difference.

Some of the electrons’ energy is transmitted to the component, causing a difference in energy across the component called an electrical potential differential.

“Electrical potential differential” is the term used to describe the difference in electric potential between two places. Electric potential difference, also known as voltage 

The SI unit of potential difference is Volt. It is denoted by V.

One joule of work is required to transfer one coulomb of charge called Volt.