Question

What is the S.I unit of electric potential?
$
  (a){\text{ ampere}} \\
  (b){\text{ volt}} \\
  (c){\text{ volt}}{\text{.m}} \\
  (d){\text{ coulomb}} \\
 $

Answer 1

Hint – In this question use the concept that electric potential is electromotive force, and its basic unit is joule per coulomb. Use the definition of electric potential at a point as it is defined as the amount of work done in moving a unit positive charge from infinity to that point.

Complete step-by-step answer:
As we know that the symbol of electric potential is (V), which is also known as voltage between two points.
And it is also defined as joule per coulomb or electromotive force (E.M.F).
So the S.I unit of electric potential is volt.
Hence option (B) is correct.

Note – SI units is known as international systems of units, it is a system of physical units based upon the meter, kilogram, second, ampere, kelvin, candela and mole together with a set of prefixes to indicate the multiplication or division by a power of 10.