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You know, if a charge q is moving with v...

You know, if a charge q is moving with velocity v enters a uniform magntic field B, it experiences a force `F=q(vxxB)`. Name the paths described by q when the angle between v and B is (1) `angletheta=90^(@)` and (2) `angletheta=angle90^(@)`.

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Circle (2) Helix
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Knowledge Check

  • An electron of charge e enters a magnetic field B with a velocity v and moves in a circular path of diameter d in the field. When the electron completes one semi-circular path, the work done by the field

    A
    zero
    B
    Bevd
    C
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    D
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