The figure below shows two long, straight wires carrying currents I1 = 1.80 A and I2 = 5.50 A into the page. The wires are separated by a distance a = 1.10 m.

(a) What are the magnitude and direction of the magnetic field at point A, halfway between the two wires? (b) What are the magnitude and direction of the magnetic field at point B, at a distance a = 1.10 m to the right of the top wire?

a y 8 1 A 12 -a- B X