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MHT CET Physics question

PhysicsElectric Charges and FieldsMHT CET

Two equally charged small balls placed at a fixed distance experiences a force F. A similar uncharged ball after touching one of them is placed at the middle point between the two balls. The force experienced by this ball is [MHTCET 2018]

Answer: (B)

Solution

After touching, the touched ball and the third ball carry each while the other keeps q; at the mid-point the force of the untouched ball is and that of the touched

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Question ID VK-070689