Under what condition the force acting on charge particle moving in the magnetic field minimum?
Correct answer: D. Both A and B.
- A. If it is either moving parallel to the magntic field intensity.
- B. If it is either moving antiparallel to the magnetic field intesity.
- C. Charge particle moves perpendicular to the velocity vector.
- D. Both A and B.
Explanation
Minimum force or no force acts on the charge particle if it is either moving parallel or antiparallel to the magnetic field intensity. F=q v B sin q, which implies angle should be either zero[parallel] or 180[antiparallel].
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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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