An electron enters a region of uniform prependicular E and B fields. It is observed that the velocity V of the electron is unaffected. A possible explanation is:
Correct answer: D. V is perpendicular to both E and B and has magnitude E/B
- A. V is parallel to t and has magnitude E/B
- B. V is parallel to B
- C. V is perpendicular to both E and B and has magnitude B/E
- D. V is perpendicular to both E and B and has magnitude E/B
Explanation
It is observed that the velocity nv of the electron is unaffected is that v is perpendicular to both E and B and has magnitude E/B
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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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