Part A

Two long, parallel wires are separated by a distance of $2\mathrm{.}80$ cm $.$ The force per unit length that each wire exerts on the other is $4\mathrm{.}90{10}^{-5}\frac{N}{m},$ and the wires repel each other. The current in one wire is $0\mathrm{.}680$ A $.$

What is the current in the second wire?

Express your answer in amperes.

$I=$