Which of the following does not affect the motion of a moving electron?
Correct answer: B. Magnetic field applied in the direction of motion
- A. Electric field applied in the direction or motion
- B. Magnetic field applied in the direction of motion
- C. Electric field applied perpendicular to the direction of motion
- D. Magnetic field applied perpendicular to the direction of motion
Explanation
As the magnetic field is applied in the direction of motion it will not affect motion because both are parallel to each other. Force = BqV sinθ where θ the angle between the magnetic field and charge is zero so F=0.
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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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