Question: 3. Charge lies on the circular disk / $ 4 m, and z = 0 m with surface density Os = 104/r C/m. Determine E

3. Charge lies on the circular disk / $ 4 m, and z = 0 m with surface density Os = 104/r C/m.

3. Charge lies on the circular disk / $ 4 m, and z = 0 m with surface density Os = 104/r C/m. Determine E at r = 0 and z = 3 m. (Mark 7) a. The surfaces p = 3 and 10 mm, and = = 0 and 25 cm are perfect conductors. The region enclosed by these surfaces has a = 2.5 x 10 * H/m, c =4 x 10- F/m, and o = 0. Let H = (2/p) cos(10xz) cos(ot) 4 A/m. Make use of Maxwell's equations to find w. (Mark 7) b. Assume that there is a region with cylindrical symmetry in which the conductivity is given by o = 1.5e-150p kS/m. An electric field of 30 k V/m is present.a. Find J: Use J = OE = 45e-150p k kA/m2 b. Find the total current crossing the surface p

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