Electromagnetic Induction & Alternating Current Resources: Grob: Basic Electronics Textbook: Chapters 15&16 http://www.say...
Michael Faraday <ul><li>While Orsted discovered a relationship between magnetism and electricity, Faraday discovered the p...
Faraday’s Experiments <ul><li>http://micro.magnet.fsu.edu/electromag/java/index.html </li></ul><ul><ul><li>Show two of Far...
Left-Hand: 3 Finger Rule <ul><li>The direction that induced current flows depends upon the direction the flux lines cut ac...
 
Alternating Current <ul><li>http://micro.magnet.fsu.edu/electromag/java/index.html </li></ul>
How it works!
Alternating Current cont.
AC vs DC (war of currents) <ul><li>Alternating Current </li></ul><ul><li>Nikola Tesla  (Westinghouse) </li></ul><ul><li>Ca...
Sine Wave
Volts/Div= ______________ Sec / Div = ______________ Period (Time) = __________ Frequency= ____________ Peak V = ________ ...
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08 electromagnetic induction & alternating current

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08 electromagnetic induction & alternating current

  1. 1. Electromagnetic Induction & Alternating Current Resources: Grob: Basic Electronics Textbook: Chapters 15&16 http://www.sayedsaad.com/fundmental/3_Basic%20AC%20Generation.htm http://www.coolmagnetman.com/magindex.htm http://micro.magnet.fsu.edu/electromag/java/index.html http://www.regentsprep.org/Regents/physics/phys03/dinduction/default.htm
  2. 2. Michael Faraday <ul><li>While Orsted discovered a relationship between magnetism and electricity, Faraday discovered the principle of electromagnetism: that electricity can be created using magnetism. </li></ul>Faraday presenting to the Royal Society
  3. 3. Faraday’s Experiments <ul><li>http://micro.magnet.fsu.edu/electromag/java/index.html </li></ul><ul><ul><li>Show two of Faraday’s experiments </li></ul></ul>
  4. 4. Left-Hand: 3 Finger Rule <ul><li>The direction that induced current flows depends upon the direction the flux lines cut across the conductor </li></ul><ul><li>This direction can be determined by using the 3-finger rule. </li></ul><ul><ul><li>Pointing finger points from </li></ul></ul><ul><ul><li> N to S pole. </li></ul></ul><ul><ul><li>Thumb points in the direction </li></ul></ul><ul><ul><li>in which the conductor moves. </li></ul></ul><ul><ul><li>Middle finger indicates </li></ul></ul><ul><ul><li>the direction of electron flow. </li></ul></ul>
  5. 6. Alternating Current <ul><li>http://micro.magnet.fsu.edu/electromag/java/index.html </li></ul>
  6. 7. How it works!
  7. 8. Alternating Current cont.
  8. 9. AC vs DC (war of currents) <ul><li>Alternating Current </li></ul><ul><li>Nikola Tesla (Westinghouse) </li></ul><ul><li>Can be generated easily </li></ul><ul><li>Can be sent long distances with little loss in power </li></ul><ul><li>Does not require batteries </li></ul><ul><li>Can be changed into DC easily when needed </li></ul><ul><li>Few generating stations </li></ul><ul><li>Direct Current </li></ul><ul><li>Thomas Edison </li></ul><ul><li>Can be generated easily </li></ul><ul><li>Difficult to send long distances </li></ul><ul><li>Most devices need DC </li></ul><ul><li>Sometimes requires the need for batteries </li></ul><ul><li>Many generating substations (less than mile) </li></ul>
  9. 10. Sine Wave
  10. 11. Volts/Div= ______________ Sec / Div = ______________ Period (Time) = __________ Frequency= ____________ Peak V = ________ P-P Voltage = _________ RMS V= _________
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