Calculate the resistivity of a material of a wire 10 m long, 0.4 mm in diameter and having a resistance of `2.0 Omega`.

Calculate the resistivity of the material of a wire 1.0 m long, 0.4 mm in diameter and having a resistance of 2.0 Omega .

Calculate the resistivity of the material of a wire 1.0 m long, 0.4 mm diameter and having a resistance of 2.0 Omega .

Calculate the resistivity of the material of a wire 1.0 m lomg, 0.4 mm diameter and having a resistance of 2.0 ohm.

(a) What do you understand by the ''resistivity'' of a substance? (b) A wire is 1.0m long, 0.2 mm in diameter and has a resistance of 10 Omega . Calculate the resistivity of its material?

Calculate the the resistivity of the material of a wire whose resistance is 5Omega , length 1m and radius 0.6mm.

(a) Give two examples of substances which are good conductors of electricity. Why do you think they are good conductors of electricity? (b) Calculate the resistance of a copper wire 1.0 km long and 0.50 mm diameter if the resistivity of copper is 1.7 xx 10^(-8) Omega m .

Find the resistivity of eureka wire 1.1 m long and 0.2 mm in diameter. Resistivity of eureka =49xx10^(-8) Omega m. What is the current flowing through this wire when a potential difference of 2 V is applied across it ?

Calculate the electrical conductivity of the material of a conductor of length 3 m, area of cross-section 0.02 mm^(2) having a resistance of 2 Omega .

Calculate the electrical conductivity of the material of a conductor of length 3 m, area of cross- section 0.02 mm^(2) , having a resistance of 2 Omega .

A 1m long wire of diameter 0.31mm has a resistance of 4.2 Omega . If it is replaced by another wire of same material of length 1.5m and diameter 0.155 mm , then the resistance of wire is