A wire of length 100 cm has a resistance of 10Ω. If its cross-sectional area is 0.005cm², determine its resistivity.

A. 0.0005Ωcm
B. 0.0015Ωcm
C. 0.0016Ωcm
D. 0.0700Ωcm

Correct Answer: Option A

A. 0.0005Ωcm

Explanation

e = R/AL=(10×0.005)/100=0.0005