Work and Energy Physics MCQs

By: Prof. Dr. Fazal Rehman | Last updated: May 20, 2025

1. : When the force is parallel to the direction of motion of the body, the work done on the body is
(A) Maximum
(B) Minimum
(C) Infinity
(D) Zero

2. : Which of the following is a field in which the work done in moving a body along a closed path is zero?
(A) Conservative
(B) Electromagnetic
(C) Nuclear field
(D) Electric Field

3. : What is the total work done in moving a body along a closed path in a gravitational field?
(A) Maximum
(B) Minimum
(C) Zero
(D) Unity

4. : What will be the work done if the force is perpendicular to the direction of motion of the body?
(A) Zero
(B) Maximum
(C) Minimum
(D) Infinity

5. : The rate of doing work is called?
(A) Energy
(B) Impulse
(C) Power
(D) Moment

6. : Power is a _____ quantity.
(A) Vector
(B) Scalar
(C) Force and Velocity
(D) Force and Time

7. : Power is the dot product of
(A) Force and time
(B) Force and velocity
(C) Force and mass
(D) Force and displacement

8. : A body is lifted through a height ‘h’, the work done on the body appears in the form of
(A) Force
(B) Work
(C) Potential Energy
(D) Kinetic Energy

9. : If a weight ‘W’ is lifted through a height ‘h’, the work done will be
(A) Wh
(B) -Wh
(C) Wh sinθ
(D) Zero

10. : The work done in moving a body from one place to another in a gravitational field is independent of
(A) The applied force
(B) The path followed by the body
(C) Force of gravity
(D) The power consumed

11. : The ability to do work is known as
(A) Kinetic energy
(B) Energy
(C) Power
(D) Force

12. : Which of the following is the SI unit of power?
(A) Newton
(B) Watt
(C) Joule
(D) Dyne