The Potential difference between two points in an electric field is said to one volt if one joule of work has to be done in bringing a positive charge of one coulomb from one point to another.1 volt = 1 joule/1 coulomb or1 V = 1J/1C

One Volt : It is the potential difference between two points in a current carrying conductor when 1 Joule of work is done to move is done to move a charge of 1 Coulomb from point to the other.
Since joule is the unit of work and Coulomb is the unit of charge, 1 volt of electric potential difference is equal to the 1 joule of work to be done to move a charge of 1 coulomb from one point to another in an electric circuit. Therefore
one volt is the potential difference between two points in a current carring conductor when one joule of work is done to move a charge of one coulomb from point to the other.
Difine 1volt
1 volt is the potential difference between two points in a circuit when 1 joule of work is done in moving a charge of 1 coloumb from one point to another