1.

a ring of radius 'r' has a charge q and a charge '-q' is placed on its surface. '-q' is to be taken on the surface of another ring of radius r and charge 4q placed at a distance 9r from first ring. find velocity required to reach the other surface.

Answer» a ring of radius 'r' has a charge q and a charge '-q' is placed on its surface. '-q' is to be taken on the surface of another ring of radius r and charge 4q placed at a distance 9r from first ring. find velocity required to reach the other surface.


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