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

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

A proton is projected with a uniform velocity 'v' along the axis of a current carrying solenoid, then

A proton is projected with a uniform velocity 'v' along the axis of a current carrying solenoid, then

A Proton is projected with a uniform velcoity v long the axis of a current carrying solenoid, then

A long holow copper tube carries a current I . Then, which of the following will be true ?

In a current carrying long solenoid the field produced does not depend upon