A 4m long wire with thickness 5mm carries a current 0.4 A. A second identical wire of equal length and thickness is parallel and carries 0.6 A in the same direction. The two wires are separated by 12 cm as measured from the outside of the wire.
a) What is the direction of the net force on the second wire? (Draw in diagram)
b) What is the force of the first wire on the second wire?