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Question 9 and 10
9. An infinite wire contains a linear charge distribution of magnitude 10 microcoulombs per meter. What is the electric field at a distance of 10 cm radially away from the wire? 10. By constructing a spherical Gaussian surface of radius r concentric with a sphere of radius a (a less than r) which carries a charge q distributed uniformly over its surface, show that the electric fleld outside the charged surface is identical with that of a point charge q located at the center of the sphere.
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