A hollow cylindrical (inner radius = 1.0 mm, outer radius = 3.0 mm) conductor carries a current of 80 A parallel to its axis. This current is uniformly distributed over a cross section of the conductor. Determine the magnitude of the magnetic field at a point that is 2.0 mm from the axis of the conductor.
Answers: 3
from the axis of the conductor![B = \frac{\mu_oI}{2 \pi d } [\frac{d - r_1}{r_2 -r_1} ]](/tpl/images/0665/1574/ba328.png)
is the permeability of free space with a value of 
![B = \frac{(4 \pi *10^{-7})(80)}{2 * 3.142 * 2 *10^{=3} } [\frac{(2^2 - 1 ^2 )*10^{-3}}{(3^2 - 1^2) *10^{-3}} ]](/tpl/images/0665/1574/b83ea.png)
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A hollow cylindrical (inner radius = 1.0 mm, outer radius = 3.0 mm) conductor carries a current of 8...
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