Calculate the resistance of a metal wire of length 2m and area of cross-section `1.55 xx 10^(-6) m^(2)`
(Resistivity of the metal is `2.8 xx 10^(-8) Omega m`)

(a) Write down an expression for the resistance of a metallic wire in terms of the resistivity. (b) What will be the resistance of metal wire of length 2 metres and ares of cross-section 1.55 xx 10^(-6)m^(2) , if the resistivity of the metal be 2.8 xx 10^(-8) Omega m ?

Calculate the resistance of an aluminium wire of length 50 cmand cross sectional area 2.0mm^(2) . The resistivity of aluminium is (rho)=2.6xx10^(-8)(Omega)m.

Calcualte the resistance of a steel wire of length 10m and diameter 0.6mm at 0^(@)C and 100^(@)C . (Electrical resistivity of steel 0^(@)C is 15 xx 10^(-8)Omega m and mean temperature coefficient of resistance of steel is 50 xx 10i^(-4)K^(-1)

Calculate the conductivity of a wire of length 2 m, area of cross-sectionl 2 cm^(2) and resistance 10^(-4) Omega .

A copper wire of length 2m and area of cross-section 1.7 xx 10^(-6)m^(2) has a resistance of 2 xx 10^(-2) ohms. Calculate the resistivity of copper.

The resistance of a wire of length 330m and cross-section area 1.0 mm^(2) made of material of resistivity 1.0 xx 10^(-7) Omegam is:

Calculate the area of cross-section of a wire if its length is .0 m , its resistance is 23 Omega and the resistivity of the material is 1.84 xx 10^-6 Omega m .

Calculate the resistance and electrical conductivity of a 2m long copper wire of cross sectional area 0.01 mm^2 . Givne resistivity of copper is 1.78xx10^(10) Omega m .

A nichrome wire of length 100 cm and area of cross-section 0.5 m m^(2) has a resistance of 2.2 Omega . The resistivity of nichrome is