In one kind of computer keyboard each key is attached to a parallel plate capacitor as shown in the figure. The capacitor is maintained at a constant potential difference of 5V by an external circuit. When the key is pressed down, the top plate moves closer to the bottom plate, changing the capacitance and causing charge to flow through the circuit. If each plate is a square of side 6mm and the plate separation changes from 3mm to 1.2mm when a key is pressed, how much charge (in femto-Coulombs (10-15C)) flows through the circuit? Assume that there is air between the plates instead of dielectric. (Take eo = 9 x 10¬1ºF/m) Key. Answer: Movable plate- Dielectric Fixed plate-

In one kind of computer keyboard each key is attached to a parallel plate capacitor as shown in the figure. The capacitor is maintained at a constant potential difference of 5V by an external circuit. When the key is pressed down, the top plate moves closer to the bottom plate, changing the capacitance and causing charge to flow through the circuit. If each plate is a square of side 6mm and the plate separation changes from 3mm to 1.2mm when a key is pressed, how much charge (in femto-Coulombs (10-15C)) flows through the circuit? Assume that there is air between the plates instead of dielectric. (Take eo = 9 x 10¬1ºF/m) Key. Answer: Movable plate- Dielectric Fixed plate-

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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