Q160 / 180 · COMEDK 2016 · Physics

When a charged particle moves perpendicular to a uniform magnetic field, then

  • Correct answer
    A
    its momentum changes and total energy is same
  • B
    Both momentum and its total energy remain the same
  • C
    Both momentum and its total energy will change
  • D
    total energy changes but momentum remains same

Solution

When a charged particle moves in a uniform magnetic field normally, then a magnetic force acts on it. Due to this force, it will move in a circular path. At every point of circle, its velocity changes direction. So, its mumentun also changes bul the Lotal energy will remain same.

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

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