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Old Jun 10th 2016, 01:22 AM   #1
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Join Date: Jun 2016
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conducter wrap all over a cylinder

given a conducter with length L and
width a (L^2>>a) with σ0 conductivity.
we wrap the conducter all over around an emptey cylinder which has
radios r, (a^0.5)<<r<<L.
we now connect between the two side of the conducter a light with
R resistence.
the magnetic filed is B=Bcos(wt)(z^).
what should be the frequency w so that the power on the light will be P?
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