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A magnetic field acts on a charged particle so as to change its:

Correct answer: B. Direction of motion

  • A. Speed
  • B. Direction of motion
  • C. Energy
  • D. All of these

Explanation

The magnetic force is a deflecting force that acts perpendicularly to the velocity of a charged particle. This force continuously changes the particle's direction of motion, causing it to follow a curved or circular path, but it does no work and cannot change the particle's speed or kinetic energy.

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About Electromagnetism

Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.

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