Menu Close

Question 6: An electron does not suffer any deflection while passing through a region. Are you sure that there is no magnetic field?

ANSWER

No, we cannot say for sure if the magnetic field exists when the charged particle moves straight in the region.

When a charged particle moves in a magnetic field it experiences a force given by the equation;

Different situation can be possible for a charged particle moving straight in a region of space.

  1. There is no magnetic field in the region.
  2. There is a magnetic field such that the direction of motion of the charged particle and the magnetic field are same. In such a case the angle θ = 0°. Since sin 0° = 0, therefore, the magnetic force on the charged particle would be zero and the particle would be moving in a straight line.
  3. If there is an electric field adjusted such that its force equals to the magnetic field force but having opposite direction. In such a case both force will be cancelling each other.

So it is not possible to say with certainty that no magnetic field exists in the region.

 

3 Comments

  1. Pingback:path-of-charged-particle in a uniform magnetic field, Physics 12 … msa – msa

  2. Pingback:electron-beam-in-crossed-fields – msa

  3. Pingback:index-Conceptual Questions on Electromagnetism … msa – msa

Leave a Reply

Your email address will not be published. Required fields are marked *