A 50-V potential difference is maintained across a 4.0-m length wire that has a diameter of 0.50

Question

Christopher Dzorkpata · Accepted Answer

1. First, we need to find the resistance of the wire. We can use the formula for resistance: R =

A 50-V potential difference is maintained across a 4.0-m length wire that has a diameter of 0.50 mm. If the wire is made of material that has a resistivity of 7.0 × 10?? ?·m, the current in the wire is a) 70.0 A b) 35.0 A c) 61.0 A d) 58.0 A e) 140.0 A