An electron is projected with uniform velocity along the axis of a current carrying long solenoid. Which of the following is true ?
Answer & explanation
Correct answer: option 4
Magnetic field due to current carrying solenoid is along the axis of the solenoid.
If electron is projected along the axis of the solenoid hence angle between velocity of electron and magnetic field is zero hence force on electron is zero.
Electron will continue to move along the axis with uniform velocity.