A wire 1.0m long and with cross-sectional area, 2.0 x 10-7 m² has a resistance of 0.1Ω. Calculate the electrical conductivity of the wire

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A. 2.0 x 107Ω‾¹m‾¹
B. 5.0 x 107Ω‾¹m‾¹
C. 2.0 x 108Ω‾¹m‾¹
D. 5.0 x 108Ω‾¹m‾¹

Correct Answer: Option B

B. 5.0 x 107Ω‾¹m‾¹

Explanation

K = 1/RA=1/0.1×2×10^−7

=5×10^7

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