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Created for Albert.io. Copyright 2017. All right reserved.

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

What is the magnitude of the net electric field at point $P$, which is located at a third corner of the square?

A

$\cfrac { kQ }{ \sqrt { 2 }{L}^{2} }$

B

$\cfrac { kQ }{ 2{ L }^{ 2 } }$

C

$\cfrac { \sqrt { 2 } kQ }{ { L }^{ 2 } }$

D

$\cfrac { 2kQ }{ { L }^{ 2 } }$

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