Calculate the resistivity of a wire of length 2m and cross-sectional area 0.004cm2 if the resistance is 3.0 Ω.
- 0.0000267Ωcm
-
0.006Ωcm
- 0.26700Ωcm
- 0.27500Ωcm
- 0.060000Ωcm
The correct answer is: B
Explanation
R = αL/AP = RA/L = (3 x 0.004)/2 = 0.006