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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