An electron enters a magnetic field at an angle of less than 90 degrees with magnetic field. Which of the following paths is followed by an electron?
Correct answer: D. Helical
- A. Straight
- B. Circular
- C. Curve
- D. Helical
Explanation
If a charged particle enters at an angle, then its motion is a combination of certucal and horizontal component of velocity. Hence, when it enters a magnetic field it moves in a circular path due to vertical component and straight path due to horizontal component of velocity and the resultant path is a helical path.
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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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