An Electron Enters a Region of Uniform Perpendicular and Fields

question 19

Multiple Choice

An electron enters a region of uniform perpendicular and fields.It is observed that the velocity of the electron is unaffected.A possible explanation is:

• A)is parallel to and has magnitude E/B
• B)is parallel to
• C)is perpendicular to both and and has magnitude B/E
• D)is perpendicular to both and and has magnitude E/B
• E)the given situation is impossible

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