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

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

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

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

A charged particle goes undeflected in a region containing uniform electric and magnetic field.It is not possible at all (vecupsilon="velocity of particle", vecE="uniform electric field", vecB="uniform magnetic field")

A charged particle moves undeflected in a region of crossed electric and magnetic fields. If the electric field is switched off, the particle has an initial acceleration a . If the magnetic field is switched off, instead of electric field, the particle will have an initial acceleration

Assertion If the path of a charged particle in a region of uniform electric and magnetic field is not a circle, then its kinetic energy may remain constant. Reason In a combined electric and magnetic field region a moving charge experiences a net force F=qE+q(VxxB), where symbols have their usual meanings.