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PH106 Faraday's Law

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Richard Datwyler

on 8 February 2017

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Transcript of PH106 Faraday's Law

Faraday's Law
Faraday's law tells the magnitude of the emf that is produced from a changing flux.
This flux can change in 3 ways.
B field
Often one finds the current through a wire with known resistance
In addition Faraday's law calculates the value of the electric field. In our class we are only going to look at a conductor moving through a B field, the same set up as motional emf. This results in:
In a region of .5 T magnetic field a ring with radius 10 cm rotates. If the ring has 20 turns and a total resistance of 2 ohms, what is the average current produced if it starts in this orientation and rotates 90 degrees in .75 s?
B out
t = 0 s
A magnetic field of 1.5 T is pointing vertical in a region of space. A 50 cm metal rod is moving north through that same region of space at a speed of 25 m/s, what is the motional emf and the E field that is created in this rod?
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