Question

hi everyone....

please solve with each n every step shown...i am marking brainliest...
thank you​

Answer 1

Answer:

diameter = 0.2mm

radius = 0.1mm = 1 x 10^-4 m

area of cross section = πr²

= 22/7 x 10^-8 m²

resistance=resistivity x length/area of cross section

10 = resistivity x 1 / 22/7 x 10^-8

resistivity = 22/7 x 10^-7

or

resistivity = 3.14 x 10^-7ohm metre