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Created for Albert.io. Copyright 2016. All rights reserved.

Two charges of equal magnitude are placed at opposite corners of a square, as shown in the diagram above.

Which of the following most closely approximates the magnitude of the net electric potential at point P, which is located at a third corner of the square?

A

$0$

B

$\cfrac { 2k{ Q } }{ { L } }$

C

$\cfrac { k{ Q } }{ { \sqrt { 2 } L } }$

D

$\cfrac { \sqrt { 2 } k{ Q } }{ { L } }$

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