Why Do Two Wires Carrying Currents in the Same Direction Attract Each Other?

[lavankohsa]

Homework Statement

two proton beams going in same direction repel each other whereas two wires carrying currents in same direction attract each other

Homework Equations

The Attempt at a Solution

two proton going in same direction then it makes two current going in same direction. And current going in same direction attract each other in magnetism. But in electrostatic, like charges repel each other.

 

[ShayanJ]

two proton beams going in same direction repel each other

Its not that simple. See here!