Question

A long straight metallic pipe with radius a has a surface charge density \sigma . (a) which statement describes the magnitude of the electric field as a function of the radial distance r from the symmetry axis of the pipe for 0<_ r<_ a? (b) which statement best describes the magnitude of the magnitude of the electric field as a function of the radial distance, r, from the symmetry axis of the pipe for r>a? (c) Consider a gaussian surface that is a cylinder of radius r and length L

          A long straight metallic pipe with radius a
 has a surface charge density \sigma . (a) which statement describes the magnitude of the electric field as a function of the radial distance r from the symmetry axis of the pipe for 0<_ r<_ a? (b) which statement best describes the magnitude of the magnitude of the electric field as a function of the radial distance, r, from the symmetry axis of the pipe for r>a? (c) Consider a gaussian surface that is a cylinder of radius r and length L

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