You have known that electric currents can flow in an electric circuit the electric current sources or voltage sources are found. in other words, in the electric circuit there is a potential (positive pole) and low potential (negative pole). electric currents flow from a high potential to a low potential.
Potential difference or electric voltage is an energy that functions to conduct electric changes from one point to another point.
The larger the potential difference, the more energy is carried by each electric charge. the unit of electric potential difference is volt(V). The unit was taken from the name of an Italian scientist, Alessandro Volta (1775-1827).
Potential difference of 1 volt is defined as the energy of 1 joule from voltage source to displace electric charges of 1 coulomb.
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