I want the solution in 30 min. In an electrometer, the movable plate is 11 cm in diameter. When 12 kv is applied between the movable plate and the fixed plate, The force is 0.006N. what is The change in capacitance for 1.5 mm movement if the movable plate  Ans=0.125*10^-12 F

Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter18: Resistive-inductive Parallel Circuits
Section: Chapter Questions
Problem 1PA: Incandescent lighting of 500 W is connected in parallel with an inductive load. A clamp-on ammeter...
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I want the solution in 30 min.

In an electrometer, the movable plate is 11 cm in diameter. When 12 kv is applied between the movable plate and the fixed plate, The force is 0.006N. what is The change in capacitance for 1.5 mm movement if the movable plate 

Ans=0.125*10^-12 F

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