A negligibly small current is passed through a wire of length 15 m and unifrom cross-section `6.0 xx 10^(-7) m^(2)` and its resistance is measured to be `5 Omega`. What is the resistivity of the material at the temperature of the experiment?

Explanation

Here `L = 15 m, A = 6.0 xx 10^(-7) m^(2), R = 5.0 Omega, rho = ?`
`rho = (R_(A))/(1) = (5.0610)/(15) = 2.0 xx 10^(-7) Omega m`