ch32-p059 - 59 Let R be the radius of a capacitor plate and...

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B rdE dt = µε 00 2 , and for r R , it is B R r dE dt = 2 2 . The maximum magnetic field occurs at points for which r = R , and its value is given by either of the formulas above: B RdE dt max . = 2 There are two values of r for which B = B max /2: one less than R and one greater. (a) To find the one that is less than R , we solve 24 dt dt = for r . The result is r = R /2 = (55.0 mm)/2 = 27.5 mm. (b) To find the one that is greater than
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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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