2. Shown below is the cross-section of two large parallel plates carrying charges +Q (top) and -Q (bottom). Each plate has area A. Vertically between the plates, a small charged particle with charge q and mass m is suspended at y=d/2, i.e. the force of gravity FG = -mg and the electrostatic force on the particle cancel. Recall that the electric field between large, oppositely charged plates of uniform charge density is E = o/e, where o is the charge per unit area. a. What is the sign of the charge q? b. Determine q in terms of the other quantities given. c. Draw at least two equipotential lines on the figure and label the direction of increasing potential. d. If the charge q moves from y=0 to y=d, does it gain or lose potential energy? Explain.

2. Shown below is the cross-section of two large parallel plates carrying charges +Q (top) and -Q (bottom). Each plate has area A. Vertically between the plates, a small charged particle with charge q and mass m is suspended at y=d/2, i.e. the force of gravity FG = -mg and the electrostatic force on the particle cancel. Recall that the electric field between large, oppositely charged plates of uniform charge density is E = o/e, where o is the charge per unit area. a. What is the sign of the charge q? b. Determine q in terms of the other quantities given. c. Draw at least two equipotential lines on the figure and label the direction of increasing potential. d. If the charge q moves from y=0 to y=d, does it gain or lose potential energy? Explain.

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter24: Gauss’s Law

Section: Chapter Questions

Problem 24.7OQ: Two solid spheres, both of radius 5 cm. carry identical total charges of 2 C. Sphere A is a good...

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