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2.12: do parts: C and D

A uniformly charged disk with radius R = 25.0 cm and uniform charge density = 7.70 x 10-³ C/m² lies in the xy-plane, with its center at the origin. What is the electric field (in MN/C) due to the charged disk at the following locations?
(a) z = 5.00 cm
(b) z = 10.0 cm
(c) z = 50.0 cm
(d) z = 200 cm
MN/C
MN/C
MN/C
MN/C

Expert Solution

Step 1

we have given that

R = 25 cm =0.25 m

charge density =7.70 $\times$ 10^-3 C/m²

we know the electric field on the axis of charged disk

$E = 2 π k σ (1 - \frac{z}{\sqrt{z^{2} + R^{2}}})$

where k = $9 \times 10^{9}$ Nm²/C²

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