Consider two long, straight, current-carrying wires seen end-on. perpendicular to the screen of the computer. The current in the left wire is coming out at you and the current in the right wire is going in away from you.

Define a coordinate system with both wires in the z-direction with the left wire at (x = 0, y =0), the right wire at (x = d, y = 0), and y being positive upwards in the screen. Of course, using a right-hand coordinate system, the z-direction is out of the screen towards you.

Let: I_Left = 15.0 A, I_Right = 16.0 A, and d = 1.5 x 10^-3 m

What is the y-component of the total magnetic field at the point (x = - 3.3 x 10^-3 m, y = 0)? (This is a point to the left of both wires?

I (out) I (in)