Subject: General Science
Book: NCERT Physics Class 12
Study of changing magnetic fields and induced currents.
- **Faraday’s Laws**:
- Induced EMF and current.
- **Lenz’s Law**:
- Direction of induced current.
- **Transformers and AC Circuits**:
- Working of transformers and power transmission.
**Possible Exam Questions:**
1. State and explain Faraday’s laws of electromagnetic induction.
2. Derive the formula for self-inductance and mutual inductance.
3. How do transformers work? Explain their efficiency.
4. What is the significance of Lenz’s Law?
5. Explain the concept of power factor in AC circuits.
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