Two parallel wires carry currents in the SAME direction. They:

1. Each current-carrying wire creates a magnetic field around it. 2. The field of the first wire exerts a force on the second wire via the motor effect. 3. Using Fleming's left-hand rule with parallel co-directional currents, both wires feel inward forces. 4. So the two wires are pulled toward each other. 5. Hence parallel currents in the same direction attract. 6. Opposite currents would repel each other instead. _Source: NCERT Class 10 Science Ch 13 'Magnetic Effects of Electric Current' (learncbse.in extract)_