Question

When will the magnitude of the force be highest?

Hint:

The force is maximum when the angle between the magnetic field and current is 90°, and it is zero when they are parallel.

Answer 1

The magnitude of the force is highest when the angle \( \theta \) between the direction of the current and the magnetic field is 90°, as the sine of 90° is 1. Therefore, the force is maximum when the conductor is placed perpendicular to the magnetic field. Thus, the magnitude of the force is maximum when: \[ F_{{max}} = BIL \]