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Work done by the magnetic force on a charged particle in presence of a perpendicular magnetic field is?

Correct answer: B. Zero

  • A. Positive
  • B. Zero
  • C. Negative
  • D. None of these

Explanation

The magnetic force acts in such a way that the direction of the magnetic force and velocity are always perpendicular to each other.If force and velocity are perpendicular, force and displacement are also perpendicular; thus, W= FS cos q, if q = 90, work done will be "zero".

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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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