8. From Sample Problem 32-1 we know that B ∝rfor r ≤Rand B ∝r–1for r ≥R. So the maximum value of Boccurs at r = R, and there are two possible values of rat which the magnetic field is 75% of Bmax. We denote these two values as r1and r2, where r1< Rand r2> R. (a) Inside the capacitor, 0.75 Bmax/Bmax= r1/R, or r1= 0.75
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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.