Why should cable of communication cable be twisted? Why?
And because the wires are constantly changing the positions of the two wires, the influence of the two wires can be seen as consistent with the magnetic field at any point around them. The circuit based on this mode is called balanced transmission
Twisted pair should be used to resist differential mode interference. The two lines in the twisted pair are opposite to each other, and the magnetic fields produced cancel each other (the direction of the magnetic lines);