ch25_p74 - 74. We first need to find an expression for the...

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74. We first need to find an expression for the energy stored in a cylinder of radius R and length L , whose surface lies between the inner and outer cylinders of the capacitor ( a < R < b ). The energy density at any point is given by uE = 1 2 0 2 ε , where E is the magnitude of the electric field at that point. If q is the charge on the surface of the inner cylinder, then the magnitude of the electric field at a point a distance r from the cylinder axis is given by E q Lr = 2 0 π (see Eq. 25-12), and the energy density at that point is given by q Lr ==
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This note was uploaded on 01/25/2011 for the course PHYSICS 17029 taught by Professor Rebello,nobels during the Spring '10 term at Kansas State University.

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