An electron moves along +x direction. It enters into a region of uniform magnetic field

→

B

directed along −z direction as shown in fig. Draw the shape of trajectory followed by the electron after entering the field.

OR
A square-shaped current-carrying loop MNOP is placed near a straight, long current-carrying wire AB as shown in the fig. The wire and the loop lie in the same plane. If the loop experiences a net force F towards the wire, find the magnitude of the force on the side 'NO' of the loop.