Each plate of an ideal air-filled parallel–plate capacitor has an area of 20 cm2, and the separation of the plates is 0.09 mm. An electric field of 2.1 x 106 N/C is present between the plates. What is the surface charge density on the plates?
Each plate of an ideal air-filled parallel–plate capacitor has an area of 20 cm2, and the separation of the plates is 0.09 mm. An electric field of 2.1 x 106 N/C is present between the plates. What is the surface charge density on the plates?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter20: Electric Potential And Capacitance
Section: Chapter Questions
Problem 37P
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Each plate of an ideal air-filled parallel–plate capacitor has an area of 20 cm2, and the separation of the plates is 0.09 mm. An electric field of 2.1 x 106 N/C is present between the plates. What is the surface charge density on the plates?
Hint: First, calculate the capacitance and potential difference between the plates. Then solve for Q = CV. The surface charge density is the charge divided by the plate area. Standard units!
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