Side 1 of 3
SPH3U1: Grade 11 Physics
A Virtual Learning Approach
Electromagnetic Induction
Instructions
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Click on the icon in the left column to activate the Java Applet Demo
Complete the appropriate information in the right column
Include diagrams on the back, if needed
Magnetic Fields Around a Current-Carrying Conductor
Left Hand Rule for Electron Flow Through a Conductor
http://www.walter-fendt.de/ph14e/mfwire.htm
Magnetic Fields Caused by Changing Electric Fields
Magnetic Fields Induced by Current Carrying Coils
Left-Hand Rule for Electron Flow in a Coil (Solenoid)
http://micro.magnet.fsu.edu/electromag/java/compass/index.html
Electric Fields Caused by Changing Magnetic Fields
Electric Current Induced in a Coil (Magnet moving near a Coil)
Lenz’s Law for Magnets Moving Past Conductors
http://micro.magnet.fsu.edu/electromag/java/lenzlaw/index.html
Electric Current Induced in a Coil (Coil moving near a Magnet)
http://lectureonline.cl.msu.edu/~mmp/applist/induct/faraday.htm
Practical Application
Metal Detector
Explain how a m etal detector works using the language of Electrom agnetic Induction
http://micro.magnet.fsu.edu/electromag/java/detector/index.html
Side 2 of 3
SPH3U1: Grade 11 Physics
A Virtual Learning Approach
Electromagnetic Induction
Lorentz Force (Using +ve charge carriers)
Left-Hand Rule for Force on Electron Flow in a Magnetic Field
http://www.walter-fendt.de/ph14e/lorentzforce.htm
Motor Principal (Using +ve charge carriers)
Commutator: The purpose of the commutator is
Brushes: The purpose of the brushes are
The force on the current carrying conductors in the magnetic field
obey
http://ionaphysics.org/lab/Fendt/ph11e/ph11e/electricmotor.htm
Faraday’s Electromagnetic Lab
Choose Electricity, M agnets and Circuits from the scrolling m enu on the left side. Then
choose Faraday’s Electrom agnetic Lab
Try all of the sim ulations
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Bar Magnet
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Pickup Coil
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Electrom agnet
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Transform er
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Generator
http://phet.colorado.edu/web-pages/simulations-base.html
Practical Application
Condenser Microphone
Explain how a m icrophone works using the language of Electrom agnetic Induction
http://micro.magnet.fsu.edu/electromag/java/microphone/
Side 3 of 3
SPH3U1: Grade 11 Physics
A Virtual Learning Approach
Electromagnetic Induction
Practical Application
Loudspeaker
Explain how a loudspeaker works using the language of Electrom agnetic Induction
http://micro.magnet.fsu.edu/electromag/java/speaker/index.html
Practical Application
Transformer
Explain how a transform er works using the language of Electrom agnetic Induction
State the Conservation of Power Equation for an Ideal Transform er
(Ask your teacher to help you with this)
State the ratio relating num ber of turns in the Prim ary and Secondary W indings to the
Voltages across the Prim ary and Secondary W indings
Use the Conservation of Power Equation, above, to create another ratio relating the
num ber of turns in the Prim ary and Secondary W indings to the Currents through the
Prim ary and Secondary W indings
http://micro.magnet.fsu.edu/electromag/java/transformer/index.html