te saved and Exercise 23.17 Part A Point charges 7,-+ 2.00 pC and g:\"-2.00 C ar

Question

te saved and Exercise 23.17 Part A Point charges 7,-+ 2.00 pC and g:"-2.00 C are placed at adjacent comers of a square for which the length of each side is 5.00 em. Point a is at the center of the square, and point b is at the empty comer closest to 9z Take the electric potential to be zero at a distance far from both charges what is the cloctric potential af pont due to qi and q? Express your answer with the appropriate units Part A, B, C VValue Units My Answers up Part B What is the electric potential at pointb Express your answer with the approprianits p least ? V Value Units My Answers Give Up Part C Apont charge "-300 C moves tom pont a topontb How much work is done ong3 bythe electig forces esented byT, and g? Express your answer with the appropriate units WValue Units

Explanation / Answer

a = 5 cm = 0.05 m

part A) at a , the center of the square

distance of center from charges , d = a/sqrt(2)

d = 0.05/sqrt(2)

d = 0.034 m

electric potential at a = k * (q1 + q2)/d

electric potential at a = 9 *10^9 * (2 - 2) *10^-6/0.034

electric potential at a = 0 V

part B) at point b

electric potential at b = 9 *10^9 * 2 *10^-6/(sqrt(2) * 0.05) - 9*10^9 * 2 *10^-6/.05

electric potential at b = -1.05 *10^5 V

part C)

work done by electric field = - change in potential * charge

work done by electric field = 3 *10^-6 *(-1.05 *10^5 - 0)

work done by electric field = -0.315 J

the work done by electric field is -0.315 J

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