A wire of radius r carries a current with density j cr-r
A wire of radius R carries a current with density: J =C(R-r).
a.) Find the total current carried by the wire.
b.) Find the magnetic field B(r) for all distances r > R.
c.) Find the magnetic field B(r) for all distances r < R.
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A telescope has magnification of 40 and length of 1230mm. What are the focal lengths of the eyepeice
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A wire of radius R carries a current with density: J =C(R-r). Find the total current carried by the wire
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