A ring with a and has a charge density Pm = B(1+ sing)8(-a)8(2) located in the x.y field, i = xì + yj + zk = pp + zk p = (x)2 + y²) as in the picture. Use cylinder coordinates with If point P is in the z-axis, point (0, 0, z), then, without using a multipole expansion approach, look for the electric field at point P because of the distribution of the charge (stated in the cartesian coordinates).
A ring with a and has a charge density Pm = B(1+ sing)8(-a)8(2) located in the x.y field, i = xì + yj + zk = pp + zk p = (x)2 + y²) as in the picture. Use cylinder coordinates with If point P is in the z-axis, point (0, 0, z), then, without using a multipole expansion approach, look for the electric field at point P because of the distribution of the charge (stated in the cartesian coordinates).
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