Question

The area of cross section of a metallic wire is 4×10^(-8)m² and it's specific resistance is 10×10^(-8) ohm meter. If the resistance of wire is 25 ohm, what would be it's length? ​

Answer 1

Answer:

the length would be 25 m

Explanation:

R=ρ  

Given R=25 , ρ = 10 × (10^(-8)) , A = 4 × (10^(-8))

25=10××  

25 = l