what is the resistance of copper wire in this situation? 200 meters long strand of wire, with a resistivity of 0.625x10^-6
im not sure if this is the right equation but:
resistance=resistivity x length/area
The Attempt at a Solution
this is the part im stuck at, i have the resistivity and the length of the wire, but what do i use for the area? this is what i have so far:
resistance= 0.625x10^-6 x 200/area
as you can see i have no idea what area to use?