Question

-Name the unit of electric potential
1- coulomb
2- watt
3- joule
4- Volt

Answer 1

Hint: In the options we are given certain units which represent different quantities and we need to find out what is the unit of electric potential which is also known as potential difference.

Complete step by step answer:
Watt (W) is the standard unit used to measure power and One watt is equal to one joule of work done in one second. Power is the rate of doing work. Power is measured in Watts. So, option (2) is incorrect.
The charge is measured in coulomb. So, option (1) is incorrect.
The option (3) is joule and we know that it is the unit of measuring energy, so option (3) is also incorrect.
Potential difference also known as electric potential difference, is defined as the difference between the potential at any predefined two points and it is always measured in Volts, so option (1) is incorrect.

So, the correct answer is “Option 2”.

Additional Information:
joule is SI unit of work and also energy. Other units of measuring energy commonly used are calories.

Note:
The electric potential is defined as the region in space in which if we have moved some charge across it then work has to be done in order to do that. The existence of electric potential has its roots in the electric charge. In a region of space if we have a charge q placed, then in that region there will be an electric field and due to it we have electric potential.