1. Chapter 21 Electromagnetic induction Chapter Opening 21.1 Electromagnetic induction 21.2 Applications of electromagnetic induction 21.3 Transformer 21.4 Transmission of electricity

2. Lessons Discovery of electromagnetic induction Induction with motion Alternating current and direct current Induction without motion Direction of induced current Check Point Key Ideas 21.1 Electromagnetic induction

3. Practical 21.1 – Electromagnetic induction I Practical 21.2 – Electromagnetic induction II Practical 21.3 – Electromagnetic induction III Related Practical

4. Lessons Microphones Tape recording and playback Generators Check Point Key Ideas 21.2 Applications of electromagnetic induction

5. 21.3 Transformer Practical 21.4 – Transformer Related Practical Lessons Transformer Changing voltage Efficiency of transformers Key Ideas

6. Lessons Transmission of electricity Check Point Key Ideas 21.4 Transmission of electricity