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Statement of a problem № 3672

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A charge q is uniformly distributed over a thin ring of radius R. A very long uniformly charged thread with linear charge density L is placed on the axis of the ring with one end coinciding with the centre of the ring. Show that the force of interaction F will be equal to qL/4pie0R

Solution:
A charge q is uniformly distributed over a thin ring of radius R. A very long un

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