Problem 11: Consider two current-carrying wires, separated by a distance d = 2.5 cm, as shown in the figure. The left wire is directed out of the page with current I1, and the right wire is directed into the page with current I2. The point P is a distance d from both wires, so the wires and the point form an equilateral triangle.
Part (a) If both wires are carrying a current of 4.5 A, what is the magnitude of the magnetic field, in tesla, at point P?
Part (b) If the current from the first wire is 4.5 A and the current from the second is 12.5 A, what is the magnitude of the magnetic field, in tesla, at point P?