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An electron is projected with uniform ve...

An electron is projected with uniform velocity along the axis of a current carrying long solenoid. Which of the following is true?

A

(a) The electron will be accelerated along the axis.

B

(b) The electron path will be circular about the axis.

C

(c) The electron will experience a force at `45^@` to the axis and hence execute a helical path.

D

(d) The electron will continue to move with uniform velocity along the axis of the solenoid.

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