A. spherical capacitor of inner radius 1.00 mm and outer radius 2.00 mm has the electric energy density of 2.00 xat r= 1.50 mm. What is the magnitude of the electric field at region r?A. 2.00 x 106 V/mB. 4.00 x 10° V/mC. 2.00 x 1012 V/mD. 4.00 x 102 V/mA parallel plate capacitor is connected to an ideal battery with voltage V. While the battery is stil connected, a slab withdielectric constant K is inserted between the plates. Which of the following is TRUE regarding the electric field E and the storedenergy U?A. E increases, U increasesB. E decreases, U decreasesC. E remains the same, U increasesD. Eremains the same, U remains the same2Given a cylindrical conductor of radius 1.50 mm with current density 2.50 A/m and free-electron density of38.00 x 1028What is the drift speed?А. 1.95 х 10 10 m/s18B. 1.95 x 10 m/sC. 2.76 x 10 m/s.D. 2.76 x 10 1 m/s

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A spherical capacitor of inner radius 1.00 mm and outer radius 2.00 mm has the electric energy density of 2.00 x 10 En at r= 1.50 mm. What is the magnitude of the electric field at region r? A. 2.00 x 106 V/m B. 4.00 x 106 V/m C. 2.00 x 1012 V/m D. 4.00 x 1012 V/m

A spherical capacitor of inner radius 1.00 mm and outer radius 2.00 mm has the electric energy density of 2.00 x 10 En at r= 1.50 mm. What is the magnitude of the electric field at region r? A. 2.00 x 106 V/m B. 4.00 x 106 V/m C. 2.00 x 1012 V/m D. 4.00 x 1012 V/m

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter8: Capacitance

Section: Chapter Questions

Problem 77CP: A spherical capacitor is formed from two concentric spherical conducting spheres separated by...

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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

A. spherical capacitor of inner radius 1.00 mm and outer radius 2.00 mm has the electric energy density of 2.00 x
at r= 1.50 mm. What is the magnitude of the electric field at region r?
A. 2.00 x 106 V/m
B. 4.00 x 10° V/m
C. 2.00 x 1012 V/m
D. 4.00 x 102 V/m
A parallel plate capacitor is connected to an ideal battery with voltage V. While the battery is stil connected, a slab with
dielectric constant K is inserted between the plates. Which of the following is TRUE regarding the electric field E and the stored
energy U?
A. E increases, U increases
B. E decreases, U decreases
C. E remains the same, U increases
D. Eremains the same, U remains the same
2
Given a cylindrical conductor of radius 1.50 mm with current density 2.50 A/m and free-electron density of
3
8.00 x 1028
What is the drift speed?
А. 1.95 х 10 10 m/s
18
B. 1.95 x 10 m/s
C. 2.76 x 10 m/s.
D. 2.76 x 10 1 m/s

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