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A and B are two identical conducting rod...

A and B are two identical conducting rods. A is given positive charge and B is connected to a cell as shown in the figure. Will there be any change in the electrostatic force between A and B if the switch is closed ?

Text Solution

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There will be no electrostatic force between A and B. When switch is closed, electric current passes through B. The quantity of charge entering B is equal to the quantity of charge leaving B making it electrically neutral. And as charges in B are in motion, attraction between A and B because of electrostatic induction is negligible.
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