P26_009 - ab is nearly the surface area of either sphere....

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9. According to Eq. 26-17 the capacitance of a spherical capacitor is given by C =4 πε 0 ab b a , where a and b are the radii of the spheres. If a and b are nearly the same then 4
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Unformatted text preview: ab is nearly the surface area of either sphere. Replace 4 ab with A and b a with d to obtain C A d ....
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