A nichrome wire is 1.0m long and 1.0mm^2 in cross-sectional area. it carries a current of 4.0A when a potential difference of 2v is applied bettwen its end s. calculate conductivity of the wire
a) (2Mohmsm)^-1
b) (4kohmsm)^-1
c) (2mohmsm)^-1
d) (4ohmsm)^-1
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