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

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
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
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online