The unit of potential difference is the Volt (V), which is equal to a Joule per Coulomb (J/C). This difference in charge between the two points is called voltage. Equivalently, it is the potential difference between two points that will impart one joule of energy per coulomb of charge that passes through it. As you said, voltage is a way of measuring electromotive force, since a force acting on a charge gives it the ability to do work, aka a voltage is created. Learn more about the difference between electromotive force and potential difference and dimension of electromotive force here. From this definition, we can use an equation from electronics W=VQ, where W is work done (energy), V is potential difference and Q … The same is true of joules and electron volts. These include the quantities Current, Voltage and Power. When the resistor voltage are added together, their sum will equal the source voltage. Volt (V) Volt definition. Current (I) is the rate of flow of Charge Carriers, such as electrons.Current is usually thought of as moving in the direction of positive charge, so from the positive power supply to the negative. . Electron volt definition is - a unit of energy equal to the energy gained by an electron in passing from a point of low potential to a point one volt higher in potential : 1.60 × 10—19 joule. ; Current. Definition. Therefore, another way of expressing Kirchhoff’s voltage law in equation form is: V s – V 1 – V 2 – V 3 – . We define voltage as the amount of potential energy between two points on a circuit. The volt per meter, or some fractional unit based on it, is used as a means of specifying the intensity of the electromagnetic field (EM field) produced by a radio transmitter. A voltage source is a device used in electric circuits that has a fixed potential difference between its ends. In physics, an electronvolt (symbol eV, also written electron-volt and electron volt) is the amount of kinetic energy gained by a single electron accelerating from rest through an electric potential difference of one volt in vacuum. Alessandro Volta One point has more charge than another. EMF can be stated as the work done per unit of charge and the SI unit of Electromotive force is Volt. Volt is the electrical unit of voltage or potential difference (symbol: V). A voltage source can be a battery, or another source of direct current with a fixed potential difference. You can verify Kirchhoff’s voltage law by connecting a circuit and measuring each resistor voltage and the source voltage. One Volt is defined as energy consumption of one joule per electric charge of one coulomb. – V n = 0. 1V = 1J/C. Current, Voltage and Power. Electricity is the flow of electric charge.We can describe the flow of electric charge in several ways. . 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