The most common unit of electrical potential is the Volt (V)
Ohm is a unit used for measuring electrical resistance.
Potential difference is measured in Volts (shown as (V) or sometimes (E))
In SI, the same unit is used for any type of energy: the joule.
This question is not at all crystal clear to understand because there are so many different things which can be measured when considering electrical circuits and equipment! Please see the answer to the Related Question for more information.However, if you are asking about the unit to use for measuring an amount of electrical energy to be paid-for, many electric power utility companies charge their customers by 'The Unit'.The term 'The Unit' is short for the now obsolete expression 'The Board of Trade Unit' and is a measurement of electrical energy used, equivalent to one kilowatt.hour. (kW.h).1 Unit = 1 kW.h
Galvanometers were used for measuring small electric currents in early electrical instruments, as well as for detecting the presence and direction of current flow in circuits. They were also used in the development of instruments like voltmeters, ammeters, and other measuring devices in electrical engineering.
The potentiometer is the device that is used in the measuring of the potential difference.
kilowatt-hour (kWh)
Electrical pressure force is measured in volts (V). It represents the potential difference between two points in an electrical circuit, which drives the flow of electric current. It is a fundamental unit of measurement in electricity.
The unit used to measure voltage is the volt, symbolized as "V". It is the representation of electric potential difference or electromotive force in an electrical circuit.
The SI unit used for measuring width is meters (m).
the unit of length used in measuring long objects are yards and feet and inches.
The international unit is the kilogram.