4. In the figure below, q = 1.0 x 10-7 C and a = 5.0 cm, where V = 0 at infinity. a) What is the electric potential at the center of the square? b) What is the potential at the lower left corner due to the other three charges? c) How much work is required to set up the charge configuration in the figure, assuming the charges are initially infinitely far apart from one another? d) Give a brief physical interpretation of the sign of the work found in part c. +q -q a (+29) Answer: a) 0 V a α b)-31 kV a -29) c) -6.9 x 10-3 J
4. In the figure below, q = 1.0 x 10-7 C and a = 5.0 cm, where V = 0 at infinity. a) What is the electric potential at the center of the square? b) What is the potential at the lower left corner due to the other three charges? c) How much work is required to set up the charge configuration in the figure, assuming the charges are initially infinitely far apart from one another? d) Give a brief physical interpretation of the sign of the work found in part c. +q -q a (+29) Answer: a) 0 V a α b)-31 kV a -29) c) -6.9 x 10-3 J
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter16: Electrical Energy And Capacitance
Section: Chapter Questions
Problem 13P: (a) Find the electric potential, taking zero at infinity, at the upper right corner (the corner...
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