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Unformatted text preview: left loop. The switch had been closed for a long time and at t= 0 it was opened. The magnetic field still points to the left, but it is decreasing with time. o The induced current in the right loop is such that it must produce a magnetic field that opposes the change in the magnetic field due to the left loop. o The induced current in the left loop is the same as the current in the right loop. Both are counterclockwise. See also problem 31-5 on page 777 of the text for an additional example Applications of Faraday's Law Generators: Area changes with time, but magnetic field stays constant o B = B (dot product) A = BAcos o If the coil is being rotated, B = BAcos t = - d B /dt = + BA cos t o If there are N turns; = +N BA cos t Several in class demonstrations were performed to demonstrate Lenz's Law and Faraday's Law...
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