Parallel conducting wires carrying currents in the same direction repel each other.

a. True

b. False

False

Explanation:

The direction of magnetic field on a current carrying conductor can be determined by the Fleming's right hand rule where

The thumb represents the direction of motion the index finger represents the direction of field. The middle finger is the direction of induced current.

When two conductors carrying currents flowing in opposite direction, the magnetic field will be in the same direction hence they will repel.

When the currents in them flow in same direction, then it means the magnetic field will be opposition and there will be a force of attraction between the conductors.