1.

Three identical charges of q each are placed at the three verticess of an equilateral triangle ABC of side a, Electrostatic force experienced by a point charge q_0 situated at the centroid G of triangle is ___________

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Solution :Because three forces are of EQUALL magnitude and are inclined at an angle of ` 120 ^(@) `from ONE another . As a result the resultant force is zero.


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