A cylindrical copper cable carries a current of 1370 A. There is a potential difference of 1.6 x 10^-2 V between two points on the cable that are 0.20 m apart. What is the radius of the cable?
not sure where to start.
Follow Math Help Forum on Facebook and Google+
I just googled copper resistance and got this.
electrical resistivity = ( electrical resistance * cross-sectional area ) / longitudinal length
electrical resitance of cooper = 0.0000000168 ohm.m
View Tag Cloud