7a) What is the magnitude and direction of the magnetic field of an old long wire with current 2 A flowing to the right at a point 0.25 m above the wire? 7b) If a new long wire of length 1 m and current 5 A flowing to the left is placed parallel to the old wire at the same point in part a, what would be the magnitude and direction of the force from the old wire on the new wire?

7a) What is the magnitude and direction of the magnetic field of an old long wire with current 2 A flowing to the right at a point 0.25 m above the wire? 7b) If a new long wire of length 1 m and current 5 A flowing to the left is placed parallel to the old wire at the same point in part a, what would be the magnitude and direction of the force from the old wire on the new wire?