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Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle, as the drawing shows. The magnitude of each of the charges is 4.0 µC, and the lengths of the sides of the triangle are 4.7 cm. Calculate the magnitude of the net force that each charge experiences.

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  1. See ..first find the force on any one charge at any one vertice of triangle ..say on -ve charge ie kq²/r² towards positive charge due to each of positive charges and since angle between these two forces will come out to be 60° therefore net resultant force will be root 3 times kq²/r² .....similarly find for other two +ve charges ....
    Hope u understand ....any related query u may ask again😃

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