Question

State true or false: A charged particle enters a region of uniform magnetic field at an angle of $85^{0}$ to the magnetic lines of force. The path of the particle is a circle.

Answer 1

The statement is false

Explanation:

Along the magnetic field, the velocity is in forward direction making a helix path.

When a charge particle enters into the magnetic field, at an angle 85°, the path becomes circle

As the statement says that the magnetic field is vertical direction, the particle moves in the quadrant making an angle 85°

hence the path becomes vertical

Answer 2

$\huge\bold\red{HOLA!!}$

When the particle is moving perpendicular to the direction of magnetic field, the force is perpendicular to both direction of velocity and the magnetic field. Then the force tends to move the charged particle in a plane perpendicular to the direction of magnetic field, in a circle.