Electron moving along the axis of a current-carrying solenoid

1. A.
   B, C and D only
2. B.
   B and C only
3. C.
   A and D only
4. D.
   B and E only

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1. A.
   the electron will be accelerated along the axis.
2. B.
   the electron will continue to move with uniform velocity along the axis of the solenoid.
3. C.
   the electron path will be circular about the axis.
4. D.
   the electron will experience a force at $45^{\circ}$ to the axis and execute a helical path.

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