Q3: An infinitely long rod of negligible radius has a uniform charge density \lambda. Calculate the electric field at a distance $r$ from the wire.
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Since the rod has a uniform charge density, the charge enclosed within the Gaussian surface is simply the charge density multiplied by the volume of the cylinder. The volume of the cylinder is given by V = πr^2L, where r is the radius of the cylinder and L is its Show more…
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