Question

Two free parallel wires carrying currents in opposite directions:

• A. attract each other
• B. repel each other
• C. do not affect each other
• D. get moved to perpendicular to each other

Answer 1

The correct option is B

repel each other

If the currents in two parallel wires are in the opposite direction, it leads to similar magnetic poles near the wires and causes repulsion. It is an experimentally established fact that two current carrying conductors attract each other when the currents are in the same direction and repel each other when the currents are in the opposite direction.