Question

resistance of a metal wire of length 2m is 52 ohm at 20°C. if the diameter of the wire is 0.5mm, what will be the resistivity of the metal at that temperature?​

Answer 1

Answer:

2.04 x 10² ohm metre

Explanation:

R=rho X l/A

A=П r²

A=275/ 7 x 10⁴ m²

52 x 275 x 10⁻⁸/28=rho

rho=51.7 x 10⁻⁸