Question

how much residence would be offered by 12mt of copper wire with a diameter of 0.01 and the resistivity of copper is 1.6 ×10 ^-8Ω mt
urgent plz help ​

Answer 1

Answer:

Given,

d= 0.01 meters

r= d/2= 0.01/2 = 0.005 mt

A= Πr² = 3.1416×0.005² = 7.854×10-⁵

L= 12 mt

ρ = 1.6×10-⁸ Ωm

we know,

R= ρL/A= 2.44×10-³ Ω

note: u didn't mention diameter's unit..