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Moving Charges and Magnetism — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsMoving Charges and Magnetism1 Mark
MCQ
When a charged particle moves at right angle to a magnetic field quantity that changes is:
  • A
    Momentum
  • B
    Speed
  • C
    Moment of Inertia
  • D
    Energy
✓

Answer

  1. Momentum

Explanation:

When a charged particle moves perpendicular to the field, its speed remains the same whereas its velocity keeps on changing.

Momentum is the product of the mass of the particle and the velocity if the particle, hence since velocity varies, momentum also varies.

When a charged particle moves at right angle to a magnetic field quantity that changes is momentum.

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