Two parallel, infinitely long, z- axis oriented conducting cylinders of radius "a" are a distance "b" apart. "b" is much, much, greater than "a". One cylinder has a charge per unit length of pi on it, the other one has a charge per unit length of -Pi on it. The cylinders are in air. What is the approximate electric field at x = 103 "b" from the center of the two parallel cylinders? %3D
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