Resistivity of the material of a conductor of uniform cross-section varies along its length as `rho=rho_(0)(1+alphax)`. Find the resistance of the conductor, if its length is l and area of corss-section A.

Explanation

`(rho_(0))/(A)[L+(1)/(2)alphaL^(2)]`
`["Hint : "dR=rho(dx)/(A)=rho_(0)(1+alphax)(dx)/(A)" "therefore R=int_(0)^(L)dR]`