Question:
An electron is projected with uniform velocity along the axis of a current-carrying long solenoid. Which of the following is true?
(a) the electron will be accelerated along the axis
(b) the electron path will be circular about the axis
(c) the electron will experience a force at 45o to the axis and hence execute a helical path
(d) the electron will continue to move with uniform velocity along the axis of the solenoid
Solution:
(d) the electron will continue to move with uniform velocity along the axis of the solenoid
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