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 between its ends. Calculate the conductivity of the wire.
a. (2MΩm)^−1
b. (4kΩm)^−1
c. (2mΩm)^−1
d. (4Ωm)^−1
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