Energy Stored in Electric Fields: The energy stored in a capacitor is UE = CAVC² We can understand this since it takes energy to push charges of the same sign together on each plate. However, we can also think of this energy as being stored in the electric field created between the plates. 3. Consider a air-filled parallel plate capacitor with plates of area A and gap width H. There is a voltage difference AVC between the plates. For a parallel plate capacitor the capacitance is a. UE = CAV² C = € A H UE = UE/Volume = H and AVC = EH. Substitute these the expressions for C and AVC into the expression for the energy stored in the capacitor to write the energy in terms of the electric field E. de vioolavad A Ë b. Divide your expression by the volume AH of the capacitor to write the electric energy density in terms fo the electric field E. IW dans er h nounsson AVC

Energy Stored in Electric Fields: The energy stored in a capacitor is UE = CAVC² We can understand this since it takes energy to push charges of the same sign together on each plate. However, we can also think of this energy as being stored in the electric field created between the plates. 3. Consider a air-filled parallel plate capacitor with plates of area A and gap width H. There is a voltage difference AVC between the plates. For a parallel plate capacitor the capacitance is a. UE = CAV² C = € A H UE = UE/Volume = H and AVC = EH. Substitute these the expressions for C and AVC into the expression for the energy stored in the capacitor to write the energy in terms of the electric field E. de vioolavad A Ë b. Divide your expression by the volume AH of the capacitor to write the electric energy density in terms fo the electric field E. IW dans er h nounsson AVC

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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Concept explainers

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

Question

Energy Stored in Electric Fields: The energy stored in a capacitor is
UE =
CAVC²
We can understand this since it takes energy to push charges of the same
sign together on each plate. However, we can also think of this energy as
being stored in the electric field created between the plates.
3. Consider a air-filled parallel plate capacitor with plates of area A and
gap width H. There is a voltage difference AVC between the plates. For
a parallel plate capacitor the capacitance is
UE ==CAV² =
C =
€ A
H
UE = UE/Volume =
H
and AVC = EH.
a. Substitute these the expressions for C and AVC into the expression for the energy stored in the capacitor to write
the energy in terms of the electric field E.
de vioolav
A
Ē
b. Divide your expression by the volume AH of the capacitor to write the electric energy density in terms fo the
electric field E.
year
AVC

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