1.

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.

Answer»

`(rho_(0)l)/(A)[1+(ALPHA l)/(2)]`
`(rho_(0)l)/(A)[1+alpha l]`
`(rho_(0)l)/(A)[1+(alphal^(2))/(2)]`
`(rho_(0)l)/(A)[1+2alphal]`

Answer :A


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