ch23-p056 - 56. (a) We consider the radial field produced...

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56. (a) We consider the radial field produced at points within a uniform cylindrical distribution of charge. The volume enclosed by a Gaussian surface in this case is Lr π 2 . Thus, Gauss’ law leads to E q A rL r == = || () . enc 0 cylinder ε ρ π π 2 00 22 ch (b) We note from the above expression that the magnitude of the radial field grows with r . (c) Since the charged powder is negative, the field points radially inward. (d) The largest value of
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