Two long parallel wires are $12$ cm apart. The dc current in wire A is $20\mathrm{.}0$ A and that in B is $30\mathrm{.}0$ A $.$

Part A

In what relative direction $($same or opposite$)$ must the currents flow for there to be a point between the wires where $\backslash (\backslash$overrightarrow$\{\backslash$mathbf$\{$B$\}\}\backslash )$ is zero?

The currents must be in the same direction.

The currents must be in the opposite directions.

The current can be in both directions.

There would not be such a point between the wires since currents are unequal.