Unit of potential difference. The volt

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Unit of potential difference. The volt

The meaning of electric potential and potential difference (p.d.) was discussed in chapter 33. When an electric current flows through a wire a potential difference is said to exist between the ends of the wire. he -‘pot nti . rence.beiwee 0 points is defined as the work done, in joules, when one coulomb of electricity moves from one point to the other. The unit of potential difference is called the volt and is defined as follows:

Two points are at a potential difference of 1 volt if 1 joule of work is done per coulomb of electricity passing from one point to the other.

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Unit of potential difference. The volt