Answer with Explanation:
We are given that




a.Length of segment,l=20 m
Magnetic force ,F=

Substitute the values

Hence, the magnetic force exert by each segment on the other=0.0119 N
b.We know that when current carrying in the wires are in same direction then the force will attract to each other.
Hence, the force will be attractive.
To be referenced, it would be true
Speed= Distance/Time
Distance=24m
Time= 5seconds
Speed= 24/5= 4.8m/s