A negligibly small current is passed through a wire of length 15 m and uniform cross-section `6.0 xx 10^(-7) m^(2)`, and its resistance is measured to be `5.0 Omega`. What is the resistivity of the material at the temperature of the experiment?

A negligibly small current is passeed through a wire of length 15cm and uniform cross-section 6.0xx10^-7m^2 ,and its resistance is measured to be 5.0Omega . What is the resistivity of the material at the temperature of the experiment?

A current of 3.2A is flowing in a wire of area of cross section 1 xx 10^(-7)m^(2) . The number of free electrons in the wire is 2 xx 10^(28) "per" m^(3) . Determine the drift velocity of electrons.

A steel wire of length 4.7m and cross sectional area 2xx10^-5m^2 stretches by the same amount as a copper wire of length 3.5m and cross sectional area of 4xx10^-5m^2 under a given load. What is the ratio of the Young's modulus of steel to that of copper?