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NEET2003PhysicsMagnetic Effects of CurrentActual

An electron is travelling along the x -direction. It encounters a magnetic field in the y -direction. Its subsequent motion will be

Options

  1. Astraight line along the x -direction
  2. Ba circle in the x z plane
  3. Ca circle in the y z plane
  4. Da circle in the x y plane.

Correct answer

B. a circle in the x z plane

Step-by-step solution

We know that the force on a charged particle e due to a magnetic field is given by array ll & F =e( v B ) Here v =v_x= i and B =B_y j & F =e v_x B_y( i j )=e v_x B_y k array Therefore the subsequent motion of the charged particle will be a circle in the x z plane.

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