Find the resistance of a copper wire of length 1m and area of cross-section `2mm ^(2)`.The specific resistance of copper=`1.7xx10^(-8)Ohm-m`.

Find the resistance of an ebonite rod of length 1m and area of cross section 2mm^(2) .The resistance of ebonite = 10^(16)Ohm-m .

Find the resistance of a nichrome wire of length 1m and area of cross-section 2mm^(2) .The resistivity of nichrome of nichrome is 100xx10^(-6)Ohm-m .

Find the resistance of a nichrome wire of length 2m and area of cross-section 2mm^(2) rho_(nichrome)=100xx10^-6Ohm-m .

Find the resistance of a nichrome wire of length 1m and area of cross-section 4mm^(2) . rho(nichrome)= 100xx10^(-6)Ohm-m .

Calculate the electrical conductivity of the material of a conductor of length 3m, area of cross section 0.2 mm^2 having a resistance of 2 ohm.

The specific resistance of a conductor increases with Increase in cross-sectional area..

Calculate the area of cross section of wire whose length is 1.0 m and resistance is 23 Omega take specific resistance of the material of wire as 1.84xx10^-6 ohm-m

The number density of electron in copper is 8.5 xx10^(28)m^(-3) . Find the current flowing through a copper wire of length 20 cm, area of cross section 1 mm square,when connected to a battery of 3 V. Given the electron mobility = 4.5xx10^(-6)m^(2)V^(-1) s^(-1) and electron charge = 1.6 xx 10^(-19)C.