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JEE Main 20244 AprilMorning Shift
Exam
JEE Main
Year
2024
Date
4 April
Shift
Morning Shift
Subject
Physics
Chapter
Magnetic Effects of Current

JEE Main 2024 · 4 April · Morning Shift · Physics · Magnetic Effects of Current

An electron is projected with uniform velocity along the axis...

An electron is projected with uniform velocity along the axis inside a current carrying long solenoid. Then :An electron is projected with uniform velocity along the axis inside a current carrying long solenoid. Then :

Options

  1. Athe electron will continue to move with uniform velocity along the axis of the solenoid.
  2. Bthe electron will be accelerated along the axis.
  3. Cthe electron path will be circular about the axis.
  4. Dthe electron will experience a force at 45∘45^{\circ} to the axis and execute a helical path.

Correct answer

A. the electron will continue to move with uniform velocity along the axis of the solenoid.

Step-by-step solution

An electron is projected with uniform velocity along the axis inside a current carrying long solenoid. Then :
Since v⃗∥B⃗\vec{v} \| \vec{B} so force on electron due to magnetic field is zero. So it will move along axis with uniform velocity.
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