Question

the resistance of a wire of length 10m is 2ohm. If the area of the cross section of the wire is 2×10^-7m^2. determine its resistivity, conductance and conductivity​

Answer 1

Answer: length = 10m

resistance of a wire = 2ohm

area of the cross section = 2×10^-7m^2.

resistivity =  resistance* area of the cross section/ length

=2*2*10^-7/ 10

=4*10^-8

conductivity​ = 1/ resistivity

=1/4*10^-8

=0.25*10^8

conductance=1/ resistance

=1/2

=0.5

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