Asked by Prince
Four point charges at the corners of a square. The distance from each corner to the centre is 0.3m. At the centre, there is a -q point charge. What is the magnitude of the net force on this charge?
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Answered by
GPT-5 mini
AI
Zero.
If the four corner charges are identical (say +q) then by symmetry the Coulomb force from each corner on the central −q points along the diagonal toward that corner, and each force is canceled by the equal and opposite force from the diagonally opposite corner. The vector sum of the four forces is therefore 0, so the magnitude of the net force is 0 N.
If the four corner charges are identical (say +q) then by symmetry the Coulomb force from each corner on the central −q points along the diagonal toward that corner, and each force is canceled by the equal and opposite force from the diagonally opposite corner. The vector sum of the four forces is therefore 0, so the magnitude of the net force is 0 N.
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