When is the force experienced by a current-carrying conductor placed in a magnetic field largest?

The force experienced by a current-carrying conductor placed in a magnetic field is largest when the direction of current is at right angles to the direction of the magnetic field.

When the length of current-carrying conductor and direction of magnetic field are perpendicular to each other, the maximum force is experienced by the current-carrying conductor.

If the direction of magnetic field and flow of electric current are mutually perpendicular then force experienced by a current-carrying conductor in a magnetic field is largest.