Question

PLZ HELP ME NEED THE ANSWER.......HELPPP!!!!
The resistance of a uniform copper wire 50.0 meters long and 1.15 mm in
diameter is 0.830 ohms at
20° C. What is the resistivity of the copper at this temperature?

Answer 1

Answer:

p=RA/l

p=0.830×1.04×10^-6/50

p=1.72×10^-8