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Q. 22

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 654

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Short Answer

Two circular disks spacedapart form a parallel-plate capacitor. Transferringelectrons from one disk to the other causes the electric field strength to be. What are the diameters of the disks?

Diameter of disk is.

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Step by Step Solution

Step 1: Formula for area and Electric field intensity

Electric field between capacitor is

Charge ischarge of electron.

Area of circle of radiusis,

Electric field due to parallel plate capacitor is,

Step 2: Calculation for radius of disk

Substitute equationin equationthen value ofis given by,

Step 3: Calculation for diameter of disk

Substitute in below formula,

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