Question

Two points in a conducting wire are 75 cm apart and the potential difference between them is 0.95 V. If the current density is 4.5 x 10⁷ A/m², what is the resistivity of the wire?

A) 2.8 x 10^-8 Ω.m

B) 1.5 x 10^-8 Ω.m 

C) 1.7 x 10^-8 Ω.m 

D) 2.4 x 10^-8 Ω.m 

E) 5.3 x 10^-8 Ω.m

Answer 1

Correct option is A) 2.8 x 10^-8 Ω.m