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Test over Magnetism- Friday

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Test over Magnetism- Friday Agenda for the day Lecture- Magnetic Induction Finish Lab from yesterday Making an electromagnet turn in Finish coloring ... – PowerPoint PPT presentation

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Title: Test over Magnetism- Friday


1
Test over Magnetism- Friday
2
Agenda for the day
  • Lecture- Magnetic Induction
  • Finish Lab from yesterday
  • Making an electromagnetturn in
  • Finish coloring magnetsphereturn in

3
Question of the day
  • If you can make a magnet from electricity, can
    you also make electricity from a magnet?

4
Michael Faraday
  • It was largely due to his efforts
    that electricity became practical for use in
    technology. His efforts created the ancestor
    of the electric motor and generators.
  • Discovered electromagnetic induction (1831)
    .which was a turning point in physics

5
Electricity from Magnetism
6
Current is induced by changing the magnetic field
  • Consider that there is no power source, but if
    you move the magnet or move the wirecurrent in
    created

7
REVIEW
  • Which moves to create current? The wire or the
    magnet?

8
Does this mean we get something (energy) for
nothing?
  • The law of conservation of energy states that the
    Force times the distance traveled Work done
  • Work input work output (or energy stored)

9
What can you do to create more current?
  • Faradays Law
  • Increase the of loops
  • Make the magnet or wires move faster

10
The Great RevolutionEinstein
  • http//www.youtube.com/watch?vTEVEBzNSwTU
  • And part 2
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