Category: Physics mcqs

A cubical region of space is filled with some uniform electric and magnetic fields. An electron enters the cube across one of its faces with velocity v and a positron enters via opposite face with velocity –v. At this instant, which statement is wrong

  • the electric forces on both the particles cause identical acceleration
  • the magnetic forces on both the particles cause equal accelerations
  • both particles gain or lose energy at the same rate
  • the motion of the centre of mass (CM) is determined by B alone
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