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lovinuz
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Homework Statement
There is a disc with radius R which has a uniformly-distributed total charge Q, rotating with a constant angular velocity w.
(a) in a coordinate system arranged so that the disc lies in the xy plane with its center at the origin, and so that the angular momentum point in the positive z direction, the local current density can be written J(x,y,z) = K(x,y) d(z). determine the surface current K(x,y) in terms of Q, w, and R.
(b) using the law of Biot and Savart, determine the magnetic field at point r=sk, k is the vector direction. find the same for r=-sk.
Homework Equations
The Attempt at a Solution
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