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Faraday's Law

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by

Richard Datwyler

on 14 March 2016

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Transcript of 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
Orientation
Area
Often one finds the current through a wire with known resistance
In addition Faraday's law calculates the value of the electric field integrated around a close loop
B in
A magnetic field of 1.0 T is turned off in a time of 10 seconds. What is the strength of an E field around a circular region of 5 cm radius?
=
In a region of .5 T magenetic field a ring with radius 10 cm rotates with a period of .25 seconds. If the ring has 20 turns and a total resistance of 2 ohms, what is the max current and the current at t = 2.5 seconds if the initial condition is shown?
B out
t = 0 s
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