Given that,
A charged particle enters a magnetic field with an angle theta .
If
![\theta=90^(\circ)](https://img.qammunity.org/2021/formulas/physics/high-school/fa554f5395547kdgilb04n7dygjitrn0o8.png)
We know that,
If the angle is 90° then the charged particle enters perpendicular to the B.
B is magnetic field.
The charged particle will be follow of the circular path.
If the angle is greater than 0 and less than 90° then the charged particle will be show the helical path.
Hence, This is required answer.