The dielectric in a capacitor serves two purposes. It increases the capacitance, compared to an otherwise identical capacitor with an air gap, and it increases the maximum potential difference the capacitor can support. If the electric field in a material is sufficiently strong, the material will suddenly become able to conduct, creating a spark. The critical field strength, at which breakdown occurs, is 3.0 MV/m for air, but 60 MV/m for Teflon. ✓ A parallel-plate capacitor consists of two square plates 19 cm on a side, spaced 0.60 mm apart with only air between them. Wh is the maximum energy that can be stored by the capacitor? Express your answer in joules. Uair = 8.6×10-4 J ▾ Submit Correct Part B Previous Answers What is the maximum energy that can be stored if the plates are separated by a 0.60-mm-thick Teflon sheet? Express your answer in joules. ——| ΑΣΦ x xь UTeflon = Submit 6 √x √x x x Previous Answers Request Answer IXI ? X-10R X G J

The dielectric in a capacitor serves two purposes. It increases the capacitance, compared to an otherwise identical capacitor with an air gap, and it increases the maximum potential difference the capacitor can support. If the electric field in a material is sufficiently strong, the material will suddenly become able to conduct, creating a spark. The critical field strength, at which breakdown occurs, is 3.0 MV/m for air, but 60 MV/m for Teflon. ✓ A parallel-plate capacitor consists of two square plates 19 cm on a side, spaced 0.60 mm apart with only air between them. Wh is the maximum energy that can be stored by the capacitor? Express your answer in joules. Uair = 8.6×10-4 J ▾ Submit Correct Part B Previous Answers What is the maximum energy that can be stored if the plates are separated by a 0.60-mm-thick Teflon sheet? Express your answer in joules. ——| ΑΣΦ x xь UTeflon = Submit 6 √x √x x x Previous Answers Request Answer IXI ? X-10R X G J

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter16: Electrical Energy And Capacitance

Section: Chapter Questions

Problem 5CQ: A parallel-plate capacitor with capacitance C0 stores charge of magnitude Q0 on plates of area A0...

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Concept explainers

Dielectric Constant Of Water

Water constitutes about 70% of earth. Some important distinguishing properties of water are high molar concentration, small dissociation constant and high dielectric constant.

Electrostatic Potential and Capacitance

An electrostatic force is a force caused by stationary electric charges /fields. The electrostatic force is caused by the transfer of electrons in conducting materials. Coulomb’s law determines the amount of force between two stationary, charged particles. The electric force is the force which acts between two stationary charges. It is also called Coulomb force.

Question

The dielectric in a capacitor serves two purposes. It
increases the capacitance, compared to an otherwise
identical capacitor with an air gap, and it increases
the maximum potential difference the capacitor can
support. If the electric field in a material is sufficiently
strong, the material will suddenly become able to
conduct, creating a spark. The critical field strength,
at which breakdown occurs, is 3.0 MV/m for air, but
60 MV/m for Teflon.
Part A
A parallel-plate capacitor consists of two square plates 19 cm on a side, spaced 0.60 mm apart with only air between them. What
is the maximum energy that can be stored by the capacitor?
Express your answer in joules.
Uair= 8.6×10-4 J
Submit Previous Answers
✓ Correct
✔ Part B
What is the maximum energy that can be stored if the plates are separated by a 0.60-mm-thick Teflon sheet?
Express your answer in joules.
UTeflon =
Submit
[5] ΑΣΦ
xa
Xb
7
√x x x
Previous Answers Request Answer
Incorrect; Try Again; 3 attempts remaining
x
1X1
?
x.10n
X
SWO
J

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