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

The magnetic field inside the long current carrying solenoid is uniform. Therefore, magnitude of force on the electron of charge -e is given by $\mathrm{F}=-\mathrm{evBsin\theta }=0 \left(\mathrm{\theta }=0^{\mathrm{o}}\right)$ as magnetic field and velocity are parallel. The electron will continue to move with uniform velocity along the axis of the solenoid.