23.21 • Points A and B lie within a region of space where there is a uni- form electric field that has no x- or z-component; only the y-component E, is nonzero. Point A is at y = 8.00 cm and point B is at y = 15.0 cm. The potential difference between B and A is Vg – VA = +12.0 V, so point B is at higher potential than point A. (a) Is E, positive or nega- tive? (b) What is the magnitude of the electric field? (c) Point C has coordinates x = 5.00 cm, y = 5.00 cm. What is the potential difference between points B and C? %3D

23.21 • Points A and B lie within a region of space where there is a uni- form electric field that has no x- or z-component; only the y-component E, is nonzero. Point A is at y = 8.00 cm and point B is at y = 15.0 cm. The potential difference between B and A is Vg – VA = +12.0 V, so point B is at higher potential than point A. (a) Is E, positive or nega- tive? (b) What is the magnitude of the electric field? (c) Point C has coordinates x = 5.00 cm, y = 5.00 cm. What is the potential difference between points B and C? %3D

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 15OQ

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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

23.21 • Points A and B lie within a region of space where there is a uni-
form electric field that has no x- or z-component; only the y-component
E, is nonzero. Point A is at y = 8.00 cm and point B is at y = 15.0 cm.
The potential difference between B and A is Vg – VA = +12.0 V, so
point B is at higher potential than point A. (a) Is Ey positive or nega-
tive? (b) What is the magnitude of the electric field? (c) Point C has
coordinates x = 5.00 cm, y = 5.00 cm. What is the potential difference
between points B and C?

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