Which of the following quantity is scalar?

Explanation

(a) Electric field: An electric field is a physical quantity that describes the force experienced by a charged particle in the presence of other charged particles. It has both magnitude and direction, so it is a vector quantity. (b) Electrostatic potential: Electrostatic potential, also known as electric potential, is a scalar quantity. It represents the amount of electric potential energy per unit charge at a given point in an electric field. It does not have a direction associated with it. (c) Angular momentum: Angular momentum is a vector quantity that describes the rotational motion of an object. It depends on both the magnitude and direction of the rotational motion. (d) Velocity: Velocity is a vector quantity that represents the rate of change of displacement of an object with respect to time. It has both magnitude and direction. Based on the given options, the correct answer is (b) electrostatic potential, as it is the only scalar quantity among the options. Scalar quantities do not have a direction associated with them.