Two very thin and very long uniform wires, placed very close to each other, carry equal but opposite currents. Point 1 is exactly at the middle of those wires and point 2 is far away from the wires. Which one among the following regarding the net magnetic field produced is correct ?

According to the Right-Hand Thumb Rule, the magnetic field produced by a long straight wire forms concentric circles around it. For two parallel wires carrying equal but opposite currents:

• At Point 1 (Middle): The magnetic fields produced by both wires point in the same direction in the region between them. Therefore, the net magnetic field is the sum of the two individual fields and is not zero.
• At Point 2 (Far away): When the distance from the wires is much larger than the separation between them, the two wires effectively act as a single conductor with a net current of zero (I - I = 0). The magnetic fields from the two wires are nearly equal in magnitude but opposite in direction, leading to destructive interference. Consequently, the net magnetic field at a distant point is zero.
• The field lines for this configuration form complex closed loops, not simple circles or ellipses around both wires.