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?

in meters

not sure where to start.

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- January 29th 2008, 12:55 PMrcmangoradius of cable.
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?

in meters

not sure where to start. - January 29th 2008, 01:13 PMa tutor
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