Question

The resistance of a metal wire of length 2m is 40 ohm at
20 °C. If the diameter of the wire is 1 mm, then what
be the resistivity of the metal at that temperature?
(A) 1.28x108m (B) 1.57x100 m
(C) 1.75x10m
(D) 1.88x10am​

Answer 1

Answer:

option d is correct answer than mark as brainllist. ..

Answer 2

Answer:

option c is correct answer than mark as brainllist