Subject: General Science
Book: NCERT Physics Class 12
Alternating current (AC) changes direction periodically.
- **AC Voltage & RMS Value**:
- Relationship between peak and RMS values.
- **AC Circuits with Resistors, Inductors, and Capacitors**:
- Impedance, phase differences.
- **Power in AC Circuits**:
- Power factor and its significance.
**Possible Exam Questions:**
1. Differentiate between AC and DC.
2. Derive the expression for RMS value of AC.
3. Explain power factor and its importance.
4. What is resonance in an AC circuit?
5. Define inductive and capacitive reactance.
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