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3. (12 points) In the four situations below (A-D) a negative point charge of magnitude Q is placed at the location marked wit

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F = F2 = Kg de F = 4K02 पव F = kg 2 - 2 Kg2 व F = {= Kg2 (A) F j fr = Fz-Fi = 0 fg - r = d2 (B) 5 d² Fretz 2 F Coso = 2KQ2 2d

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