ch30-p069 - 69. (a) At any point the magnetic energy...

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n = (950 turns)/(0.850 m) = 1.118 × 10 3 m –1 . The magnetic energy density is un i B == × × = −− 1 2 1 2 4 10 1118 10 6 60 34 2 0 22 7 3 1 2 2 3 µ π TmA m A Jm ch c h bg .. . . (b) Since the magnetic field is uniform inside an ideal solenoid, the total energy stored in the field is U B = u B V , where V is the volume of the solenoid. V is calculated as the product of the cross-sectional area and the length. Thus
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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