Question

What is the diameter of the wire if its length is 2m, the resistivity of the material of the wire is
$1.84 \times 1 {0}^{ - 6}$
Ohm-m and its resistance is 46 ohm?

Answer 1

╚»★«╝ Hey ╚»★«╝

Length of The Wire ( l ) = 2m

Resistance of The Wire ( R ) = 23∩

Resistivity of The Wire = 1.84 X 10^6 ∩m

Let the Area of Cross Section of the Wire be A.

R = P  l / A

A = P  l / R

1.84 X 10^6 X 2 / 23

⇒ 184 X 10^8

⇒ 8 X 10^8

∴ Area of Cross Section of The Wire = 8 X 10^8m²

Answer 2

Hey mate here is your answer.
HOPE IT IS HELPFUL