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MHT CET 2022 Physics question

PhysicsElectric Charges and FieldsMHT CET 2022

Two small identical metal balls are equally charged and placed at a fixed distance away from each other. They experience the electrostatic 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

Answer: (B)

Solution

Let each ball carry charge at separation , so . The uncharged identical ball touches one ball, and the charge is shared equally: both now carry . Place this ball (charge ) at the midpoint, distance from each of the other two balls. Force from the

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Question ID VK-094215