Conceptual Questions

1. Explain why a changing magnetic field induces an emf in a coil.
2. Why does Lenz’s Law ensure the conservation of energy?
3. Describe the factors that affect the magnitude of induced emf in a loop.
4. How does the number of turns in a coil influence the induced current?
5. Explain the difference between self-induction and mutual induction.
6. Why is the induced current in a loop opposite to the change in flux?
7. Discuss the role of electromagnetic induction in power generation.
8. How does the speed of a moving magnet affect the induced emf?
9. Explain the application of Lenz’s Law in electromagnetic braking.
10. Why can transformers change voltage levels efficiently using AC?