131120 | Magnetic Effect of Current and Magnetism

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 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.

[2020 | Delhi | Section - A | SET - 1 SET - 2 SET - 3, Q.20 Q.19 Q.20]