If a charged particle kept at rest experiences an electromagnetic force:
Correct answer: E. Option A and D are correct.
- A. The electric field must not be zero
- B. The magnetic field must not be zero
- C. The electric field may or may not be zero
- D. The magnetic field may or may not be zero
- E. Option A and D are correct.
Explanation
Correct options are A) and D). Electromagnetic force is the force on charged particles due to both electric field and magnetic field. Also, the electric force can be experienced by charges at rest. Magnetic force can be experienced by charges in motion. Hence, if a charged particle kept at rest experiences an electromagnetic force, the electric field must not be zero and the magnetic field may or may not 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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