A bird lands on a bare copper wire carrying a current of 25 A. The wire is 8 gauge, which means that its cross-sectional area is 0.13 cm2.
(a) Find the difference in potential between the bird's feet, assuming they are separated by a distance of 5.5 cm.
1 mV
(b) Will your answer to part (a) increase or decrease if the separation between the bird's feet decreases?