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A metalic sphere is suspended between 2 plates A and B. The plate A is negatively charged while plate B is neutral and earthed. The spehere is seen oscillating towards the plate A touches it and then it moves to plate B. It again swings from plate B to plate A continuously. 1) Why does the sphere move towards plate A first? 2) Why does it oscillate towards B? 3) Why does the sphere keep moving continuously?

Answer» A metalic sphere is suspended between 2 plates A and B.
The plate A is negatively charged while plate B is neutral and earthed.
The spehere is seen oscillating towards the plate A touches it and then it moves to plate B.
It again swings from plate B to plate A continuously.
1) Why does the sphere move towards plate A first?
2) Why does it oscillate towards B?
3) Why does the sphere keep moving continuously?


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