Q147 / 160 · TS EAMCET 2006 · Physics

The effect due to uniform magnetic field on a freely suspended magnetic needle is as follows :

  • A
    both torque and net force are present
  • Correct answer
    B
    torque is present but no net force
  • C
    both torque and net force are absent
  • D
    net force is present but not torque

Solution

When a magnetic needle is placed in a uniform magnetic field, equal and opposite forces act on the poles of the needle which give rise to a torque, but not net force.

Hence, the correct answer is option: 'B'.

Relevant Questions