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Chapter 20 Electromagnetic Induction

Chapter 20 Electromagnetic Induction. AP Physics B Lecture Notes. Induced Voltages and Induction. Sections. 20-01 Induced emf and Magnetic Flux. 20-02 Faraday’s Law of Induction. 20-03 Motional emf. 20-05 Lenz’s Law. Induced emf and Magnetic Flux. Magnetic flux  Weber (Wb).

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Chapter 20 Electromagnetic Induction

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  1. Chapter 20 Electromagnetic Induction AP Physics B Lecture Notes

  2. Induced Voltages and Induction Sections 20-01 Induced emf and Magnetic Flux 20-02 Faraday’s Law of Induction 20-03 Motional emf 20-05 Lenz’s Law

  3. Induced emf and Magnetic Flux Magnetic flux  Weber (Wb)

  4. Induced emf and Magnetic Flux

  5. Induced emf and Magnetic Flux v EMF Induced in a Moving Conductor

  6. Induced emf and Magnetic Flux L q F v Force on charge B Work done by force EMF Motional Emf

  7. Faraday’s Law of Induction Dt B v x Dx At t = 0 Fo = BA = BLx L After Dt F = Fo + DF F = BLx + BLDx DF = BLDx DF = BL(vDt)

  8. Faraday’s Law of Induction Magnetic flux will change if the area of the loop changes:

  9. Faraday’s Law of Induction Magnetic flux will change if the angle between the loop and the field changes:

  10. Faraday’s Law of Induction Change in Flux Induced emf Faraday’s Law Time for Change Lenz’s Law Number of Turns

  11. Lenz’s Law Revisited Counterclockwise Magnetic flux in the loop increases

  12. Lenz’s Law Revisited Clockwise Magnetic flux in the loop increases

  13. Lenz’s Law Revisited Clockwise Magnetic flux in the loop decreases

  14. Lenz’s Law Revisited Counterclockwise Magnetic flux in the loop decreases

  15. Lenz’s Law Revisited The rectangular loop shown is pushed into the magnetic field which points inward. In what direction is the induced current? counterclockwise

  16. END

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