Question

If the direction of the initial velocity of the charged particle is perpendicular to the magnetic field, the orbit will be :

• A. a straight line
• B. an ellipse
• C. a circle
• D. a helix

Answer 1

The correct option is C a circle

If it enters pependicular to the magnetic field, the force applied on it will be perpendicular to it's actual velocity.
$\therefore$ it will move on circular path, [Right hand thumb rule]