Question: Two thin parallel threads carry a uniform charge with linear densities X and --X. The distance between the threads is equal to l. Find the

Two thin parallel threads carry a uniform charge with linear densities X and --X. The distance between the threads is equal to l. Find the potential of the electric field and the magnitude of its strength vector at the distance r >> l at the angle 0 to the vector l (Fig. 3.5).

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