The resistance of a 5m uniform wire of cros..

Question 1 Report

The resistance of a 5m uniform wire of cross-sectional area 0.2 x 10-6m2 is 0.425. What is the resistivity of the material of the wire?

1.10 x 10-6

Ω

4.25 x 10-6

Ω

2.40 x 10-7

Ω

1.70 x 10-8

Ω

Answer Details

Resistivity = $\frac{Resistance x Area}{A r e a}$

= 0.425 x 0.2 x 10-6

= 1.7 x 10-8 $Ω$ m