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Moving Charges and Magnetism — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsMoving Charges and Magnetism1 Mark
MCQ
When an electron moves through a magnetic field, its speed will:
  • A
    Decrease.
  • B
    Increase.
  • C
    Remain the same.
  • D
    Increase first and then decrease.
✓

Answer

  1. Remain the same.

Explanation:

The work done by magnetic force on any moving charge particle is zero because magnetic force acts perpendicular to the direction of motion. Therefore speed will remain same.

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