External Work. Consider two charges lying on the xy plane. One charge q1 = +Q is at (0, a ), and another charge q2 = +Q is at (-2a,0). What would be the work needed by an external force if we want to move charge q3 = -Q from infinity to the origin (0,0)? a. -3kQ²/2a b. -kQ?/2a c. 0 d. kQ²/2a

External Work. Consider two charges lying on the xy plane. One charge q1 = +Q is at (0, a ), and another charge q2 = +Q is at (-2a,0). What would be the work needed by an external force if we want to move charge q3 = -Q from infinity to the origin (0,0)? a. -3kQ²/2a b. -kQ?/2a c. 0 d. kQ²/2a

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

Question

1. External Work. Consider two charges lying on the xy plane. One charge q, = +Q
is at (0, a ), and another charge q2 = +Q is at (-2a, 0). What would be the work
needed by an external force if we want to move charge q3 = -Q from infinity
to the origin (0,0)?
a. -3kQ²/2a
b. -kQ²/2a
с. 0
d. kQ²/2a

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