Question

Two identical closely spaced circular disks form a parallel- plate capacitor. Transferring 1.5 * 109 electrons from one disk to the other causes the electric field strength between them to be 1.0 * 105 N/C. What are the diameters of the disks

Answer 1

We have that the Diameter of the disks is mathematically given as

d= 0.01858 m

Diameter Length

Question Parameters:

• Transferring 1.5 * 109 electrons from one disk to the other
• electric field strength between them to be 1.0 * 105 N/C

Generally the equation for the Electric field  is mathematically given as

$E=q/eA\\\\Where\\\\A=\pi d^2 / 4\\\\Therefore\\\\ 1.0 * 10e5= \frac{4 * 1.5 * 10e9 * 1.6 * 10 e-19}{(8.85 * 10e-12 * 3.14 * d2 )}$

d= 0.01858 m

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