Question

Part B Constants A disk of radius a has a total charge Q uniformly distributed over its surface. The disk has negligible thickness and lies in the xy plane. (Figure 1) Throughout this problem, you may use the variable k in place of 1/(4??0). What is the magnitude E of the electric field on the z axis, as a function of z, for z > 0? Express your answer in terms of some or all of the variables Q, z, and a. You may use k instead of 1/(4??0). E = (2kQ/a^2) (1 - z/?(a^2 + z^2))

          Part B
Constants
A disk of radius a has a total charge Q uniformly distributed over its surface. The disk has negligible thickness and lies in the xy plane. (Figure 1) Throughout this problem, you may use the variable k in place of 1/(4??0).
What is the magnitude E of the electric field on the z axis, as a function of z, for z > 0?
Express your answer in terms of some or all of the variables Q, z, and a. You may use k instead of 1/(4??0).
E = (2kQ/a^2) (1 - z/?(a^2 + z^2))

Part B
Constants
A disk of radius a has a total charge Q uniformly distributed over its surface. The disk has negligible thickness and lies in the xy plane. (Figure 1) Throughout this problem, you may use the variable k in place of 1/(4??0).
What is the magnitude E of the electric field on the z axis, as a function of z, for z > 0?
Express your answer in terms of some or all of the variables Q, z, and a. You may use k instead of 1/(4??0).
E = (2kQ/a^2) (1 - z/?(a^2 + z^2))

Added by Carol B.

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