A charged particle enters a region of uniform magnetic field at an angle of ` 85@` to the magnetic line of force . The path of the particle is a circle .

When a charged particle enters a uniform magnetic field its kinetic energy

When a charged particle enters a uniform magnetic field its kinetic energy

When a charged particle enters a uniform magnetic field its kinetic energy

If a charged particle enters perpendicular in the uniform magnetic field then

A charged particle enters a magnetic field at an angle of 90^(@) with the magnetic field. The path of the particle will be a/an

A charged particle enters at 30^@ to the magnetic field. Its path becomes.

A charged particle enters a uniform magnetic field with velocity vector at angle of 45^@ with the magnetic field. The pitch of the helical path followed by the particle is p. the radius of the helix will be