University Physics with Modern Physics with Mastering Physics (11th Edition)

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22.9: a) Since E is uniform, the flux through a closed surface must be zero. That is: = = = = = Φ . 0 0 0 0 1 ρdV ρdV d ε ε q A E But because we can choose any volume we want, ρ must be zero if the integral equals zero. b) If there is no charge in a region of space, that does NOT mean that the electric field
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Unformatted text preview: is uniform. Consider a closed volume close to, but not including, a point charge. The field diverges there, but there is no charge in that region....
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