Motion ? Current: Generating Electricity (Faraday

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Motion ? Current Generating Electricity
(Faradays law)
1. A current appears only if there is relative
motion.

1. Fast motion produces a greater current.

3. Clockwise/counter clockwise current with
north pole move in/out. Opposite with south
pole.
Induced current in secondary coil, if there is
change of current in the primary coil switch or
ac current
Transformer
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Faradays Law of Induction
Magnetic flux through area A
Amount of magnetic field passes through an area A
For uniform B
(Weber, or Wb, or T m2
Faradays Law of Induction An emf is induced in
a loop when the magnetic flux that pass through
the loop is changing. The the loop is
conducting, then a current will flow.
For a loop with N turns
Change B (change current)
Change A
Change angle between them
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Current loop in magnetic field Motors
?
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Torque on a Current Loop Motors
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Torque on a Current Loop Continuous