Work, Energy and Power – Potential Energy, Conservation of Energy

Grade 11 Physics — Work, Energy and Power – Potential Energy, Conservation of Energy: 25 practice questions with instant scoring and explanations.

1. Potential energy is energy due to:
2. Gravitational PE near Earth's surface is:
3. Spring PE for extension x is:
4. Law of conservation of energy states:
5. A ball dropped from height h has maximum KE:
6. Work done by a conservative force in a closed path is:
7. Example of non-conservative force:
8. For a conservative force F, relation with PE U is:
9. A spring of constant 200 N/m is stretched 10 cm. PE stored is:
10. Total mechanical energy of a freely falling body is:
11. Escape from a system's conservative force corresponds to energy:
12. The PE at natural length of spring is:
13. Einstein's mass-energy equivalence is:
14. If 1 kg mass is fully converted to energy, energy released is about:
15. A simple pendulum has maximum KE at:
16. A simple pendulum has maximum PE at:
17. Energy stored in a stretched wire is:
18. Unit of spring constant k:
19. Two springs k₁ and k₂ in series have equivalent:
20. Two springs k₁ and k₂ in parallel have equivalent:
21. PE of a body at height h above Earth's surface (h<<R):
22. A body of mass 1 kg is at height 10 m. Its PE (g=10):
23. Which has more PE: 2 kg at 5 m or 1 kg at 10 m?
24. The potential well represents:
25. Energy conservation is obeyed in: