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An Electron Is Launched with Velocity in a Uniform θ\theta

Question 46

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An electron is launched with velocity  An electron is launched with velocity   in a uniform magnetic field   The angle  \theta  between   is between 0 and 90<sup>o</sup>. As a result, the electron follows a helix, its velocity vector   returning to its initial value in a time interval of: A)  2πm/eB B)  2πmv/eB C)  2πmv sin \theta /eB D)  2πmv cos \theta /eB E)  none of these in a uniform magnetic field  An electron is launched with velocity   in a uniform magnetic field   The angle  \theta  between   is between 0 and 90<sup>o</sup>. As a result, the electron follows a helix, its velocity vector   returning to its initial value in a time interval of: A)  2πm/eB B)  2πmv/eB C)  2πmv sin \theta /eB D)  2πmv cos \theta /eB E)  none of these The angle θ\theta between  An electron is launched with velocity   in a uniform magnetic field   The angle  \theta  between   is between 0 and 90<sup>o</sup>. As a result, the electron follows a helix, its velocity vector   returning to its initial value in a time interval of: A)  2πm/eB B)  2πmv/eB C)  2πmv sin \theta /eB D)  2πmv cos \theta /eB E)  none of these is between 0 and 90o. As a result, the electron follows a helix, its velocity vector  An electron is launched with velocity   in a uniform magnetic field   The angle  \theta  between   is between 0 and 90<sup>o</sup>. As a result, the electron follows a helix, its velocity vector   returning to its initial value in a time interval of: A)  2πm/eB B)  2πmv/eB C)  2πmv sin \theta /eB D)  2πmv cos \theta /eB E)  none of these returning to its initial value in a time interval of:


A) 2πm/eB
B) 2πmv/eB
C) 2πmv sin θ\theta /eB
D) 2πmv cos θ\theta /eB
E) none of these

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