MHT CET Physics question

PhysicsElectric Charges and FieldsMHT CET

Two small identical metal balls are equally charged and placed at a fixed distance away from each other. They experience the electrostatic force ''. 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 [MHT-CET 2020]

Answer: (B)

Solution

The touched ball and the third ball each carry while the other has q; at the mid-point the force of the untouched ball is and of the

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Question ID VK-070720