Work, Force, and Energy MCQs

1. Work is done when:
(A) There is a change in velocity
(B) A force is applied and the object moves in the direction of the force
(C) A force is applied but the object does not move
(D) There is no force acting on the object

2. The SI unit of force is:
(A) Watt
(B) Newton
(C) Joule
(D) Meter

3. Energy is defined as:
(A) The ability to do work
(B) The rate of doing work
(C) The amount of force applied to an object
(D) The distance an object travels

4. The formula for calculating work is:
(A) W = F × d
(B) W = F × v
(C) W = m × g
(D) W = P × t

5. Which of the following is the SI unit of energy?
(A) Newton
(B) Watt
(C) Joule
(D) Volt

6. The law of conservation of energy states that:
(A) Energy cannot be created or destroyed, only transferred or converted
(B) Energy can be destroyed
(C) Energy is created when work is done
(D) Energy is destroyed when work is done

7. A force of 10 N is applied to an object, and it moves a distance of 5 m in the direction of the force. How much work is done?
(A) 50 J
(B) 15 J
(C) 5 J
(D) 25 J

8. Which of the following is an example of potential energy?
(A) A moving car
(B) A stretched spring
(C) A falling rock
(D) A spinning wheel

9. Power is defined as:
(A) Work done per unit time
(B) Energy consumed per unit time
(C) Force per unit area
(D) Speed per unit time