Q84 / 90 · JEE Main 2012 (26 May Online) · Physics

This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement 1: A charged particle is moving at right angle to a static magnetic field. During the motion the kinetic energy of the charge remains unchanged. Statement 2: Static magnetic field exert force on a moving charge in the direction perpendicular to the magnetic field.

  • A
    Statement 1 is false, Statement 2 is true.
  • B
    Statement 1 is true, Statement 2 is true, Statement 2 is not the correct explanation of Statement 1.
  • C
    Statement 1 is true, Statement 2 is false.
  • Correct answer
    D
    Statement 1 is true, Statement 2 is true, Statement 2 is the correct explanation of Statement 1.

Solution

When a charged particle enters the magnetic field in perpendicular direction then it experience a force in perpendicular direction. i.e. $F=B q v \sin \theta$ Due to which it moves in a circular path.

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

Relevant Questions