Two Long Parallel Wires Are Placed Side-By-Side on a Horizontal

Multiple Choice

Two long parallel wires are placed side-by-side on a horizontal table and carry current in the same direction.The current in one wire is 20 A,and the current in the other wire is 5 A.If the magnetic force on the 20-A wire has magnitude F,what is the magnitude of the magnetic force on the 5-A wire? No external magnetic fields are present.

A) 4F
B) 2F
C) F
D) F/2
E) F/4