1. Electromagnetism II Week 9

2. Contents Bar Magnet Bar Magnet Earths Magnetic Dipole Earths Magnetic Dipole Oersteds Rule (RHR1) Oersteds Rule (RHR1) Solenoid (RHR2) Solenoid (RHR2) Electromagnet Electromagnet Lorentz Force (RHR3) Lorentz Force (RHR3) The Motor Principle The Motor Principle Faradays Law Faradays Law Lenzs Law Lenzs Law Transformers Transformers Review Review

3. Bar Magnet Field lines go from North to South Field lines go from North to South Opposites attract; likes repel Opposites attract; likes repel A compass is a magnet A compass is a magnet

4. Earths Magnetic Dipole

5. Oersteds Rule RHR1

6. Solenoid

7. Solenoid (cont.) RHR2

8. Electromagnet

9. Lorentz Force A current experiences a force in a magnetic field. A current experiences a force in a magnetic field. S N RHR3

10. The Motor Principle S N

11. Faradays Law

12. Lenzs Law

13. Review RHR1 RHR1 RHR2 RHR2 RHR3 RHR3 The Motor Principle The Motor Principle Faradays Law Faradays Law Lenzs Law Lenzs Law

14. Next Week Applications Applications The connection between E and B The connection between E and B