Magnitude of point P center (I'm Stumped)

AI Thread Summary
To determine the magnitude of the electric field at point P, the center of a square formed by four identical point charges, one must first apply the principle of superposition. Each charge contributes to the electric field at point P, and due to symmetry, the horizontal and vertical components of the electric fields from opposite charges will cancel each other out. Therefore, the net electric field at point P is zero. The key takeaway is that the arrangement of identical charges at the corners of the square results in no net electric field at the center. Thus, the electric field magnitude at point P is confirmed to be zero.
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Homework Statement

Four identical point charges, Q, are placed at the corners of a square. Each side of the square has length 2.0 m. Determine the magnitude of the electric field at the point P, the center of the square.



Homework Equations


(k)(q)/r2



The Attempt at a Solution


 
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