Chapter 21 Electromagnetic Induction

SmartBoard Pre-Lecture Notes for Chapter 21

Chapter 21 Giancoli 6th Edition Web Resources

AP Syllabus

Chapter 21 Homework

Chapter Outline:

21-1  Induced EMF (pg. 584)

• Magnetic flux
• Induced electrical potential

21-2  Faraday's Law of Induction: Lenz's Law (pg. 586)

• Faraday's Law   RE: Faraday's Law
• Lenz's Law   RE: Lenz's Law
• Back EMF
• Pulling a coil from a B field

21-3  EMF Induced in a Moving Conductor (pg. 590)

• Wire coil moving in a B field

21-4  Changing Magnetic Flux Produces an Electric Field (pg. 591)

• An E field is produced by a changing B field

Electromagnetic Induction Lab  RE: Lab Information

21-5  Electric Generators (pg. 592)

• Generator design
• AC generators

21-7  Transformers and Transmission of Power (pg. 595)

• Transformer design  RE: Transformers
• Step up and step down transformers
• Transformer calculations
• Efficiency of transformers
• Transmission of electric power at high voltage vs. low voltage

21-8  Computer Memory, Credit Card Swipes (pg. 598)

• Read/write on disk
• Credit card tapes