Question

What combination of units is equivalent to the volt ?

Answer 1

Hint: Here we are asked what combination of units is equivalent to the volt. In order to solve this question we will have to recall the concept of electric potential, as the unit of electric potential is volt.The coulomb (symbol: C) is a unit of electric charge in the International System of Units (SI). Charles-Augustin de Coulomb is the name given to the coulomb.

Complete answer:
The amount of work required to transfer a unit of charge from a reference point to a specific point within the field without creating an electric field is known as electric potential. The electric potential produced by an electrochemical cell or by changing the applied magnetic field is known as electromotive force.

Electromotive force (EMF) is a term that refers to the force that causes an electric current to flow.Volt is defined as joules per coulomb.
$1\,\text{volt}=\dfrac{1\,J}{1\,C}$
If an electric charge of 1 Coulomb is moving through a potential difference of 1 volt then 1 Joule of work is done. So,
$1\,\text{volt}=1\,\text{Joule per Coulomb}$

Note:In the International System of Units, the joule is a derived unit of energy. It is the amount of energy transmitted to (or work performed on) an object when a force of one newton acts on it in the direction of force motion over a one-metre distance (1 newton metre or Nm). When an electric current of one ampere passes through a resistance of one ohm for one second, it is also known as the energy dissipated as heat. It is named after James Prescott Joule(1818–1889), an English physicist.