A charged particle is projected into a region that may have an electric field `(vec E)` and / or magnetic field `(vec B)` .If the charged particle goes un- accelerated then it is not possible that:

The path of a charged particle projected into a uniform transverse electric field is

In a region where both non-zero uniform electric field and magnetic field coexist, the path of a charged particle

An electric field (vec E) and a magnetic field (vec B)exist in a region . The fields are not perpendicular to each other.

A charged particle is at rest in the region where magnetic field and electric field are parallel. The particle will move in a

A charged particle goes undeflected in a region containing electric and magnetic field. It is possible that

A charged particle passes through a region that could have uniform electric field only or uniform magnetic field only or both electric and magnetic fields or none of the fields. Some possible paths of motion are mentioned in Coliumn-I with the related information in Column-II

If a charged particle goes unaccelerated in a region containing electric and magnetic fields,

If a charged particle goes unaccelerated in a region containing electric and magnetic fields,

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

If a charged particle at rest experiences no electromagnetic force, then electric field in that region