There is a spherical resistor witn an inner radius a and outer radius of b. The outer surface and the inner surface are covered with conducting sheets. Find the resistance betwen the two surfaces assuming uniform resistivity [tex] \rho [/tex](adsbygoogle = window.adsbygoogle || []).push({});

WELL

I know [tex] R = \rho \frac{L}{A} [/tex]

If i divided the sphere into many cylinders then each cylinder would have a length of (b-a) and then the area would be ab times the radius (b-a)?

so then i end up with [tex] R = \rho \frac{1}{(b-a)ab} [/tex]

but that isnt right because i know the answer has someting to do with 4pi? plase help!

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# Homework Help: Please help me with this question!

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