Q- Two infinite wires run parallel to the z-axis, which points out of the page. One wire carries a current I₁= 2 A and intersects the x-axis at x = a = 3 cm. The second wire carries current I₂= 5 A and intersects the x-axis at x = -a. Both currents flow in the +z direction. 

(a) Calculate the net magnetic field due to I₁ and I₂ at Point A (the origin). 

(b) Calculate the net magnetic field due to I₁ and I₂ at Point B a distance a above the origin on the y-axis. 

(c) Calculate the net magnetic field due to I₁ and I₂ at Point C a distance 2a to the right of the origin on the x-axis.

Solution: