The figure below shows two long parallel, straight wires carrying currents, I1 = 3 A and I2 = 130 A. The distance between the wires is 18 m. What is the magnitude of the magnetic field (in nT) at point A , which is at a distance of 2 m from wire #1?
Which direction does the magnetic field point at location A (due to both wires)?
Thank you!