Supposed you have two parallel conductors A ,B separated by 20 cm apart from each other as shown. If both carrying current i1 and i2 of the same magnitude in shown direction. In which direction will be the magnet field exactly in the middle of the both wires (10 cm from each conductors)?

Answer 1

The magnetic field generated by a current-carrying wire is always in the form of concentric circles around the wire.

In this case, both conductors A and B are carrying current in the same direction, so the magnetic fields generated by each conductor will add up in the middle of the wires.

Given that the wires are 20 cm apart and the point of interest is 10 cm from each conductor, the magnetic field at that point will be equal in magnitude and direction.

Therefore, the magnetic field will be directly perpendicular to the line connecting the two conductors, pointing out of the page (or towards you, if taken as a 3D configuration).