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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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
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