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13 Jan 2012 12:59:20 IST

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Resistance

Physics

What is the resistance of a non uniform conductor in the shape of a frustum of radius 'a' and 'b' and length' L' and resistivity rho???

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nageen

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Joined: 27 Dec 2011

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17 Jan 2012 22:17:01 IST

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conider a differential element of length dx at a distance x from it...find thearea of cross section of this element in terms of x using similar triangles...then resistance is equal to resistivity *dx/A...integrate over the entire length to get the resistance...

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