If a charged particle projected in a gravity-free room deflects, then
Both fields cannot be zero

if a charged particle projected in a gravity free room it does not deflect.

If a charged particle (+q) is projected with certain velocity parallel to the magnetic field, then it will

A charged particle moves in a gravity-free space without change in velocity. Possible cases are

A charged particle is projected in a chamber with velocity v . It moves undeflected . What can be definitely said about the field ?

A positively charged particle projected towards east is deflected towards north by a magnetic field. The field may be

A charged particle is free to move in an electric field

A uniform electric field E exists in a region of space. A charged particle is projected in the plane of electric field making an angle 0 with the direction of field. Is it possible to make the particle move in a straight line by applying a uniform magnetic field?

A positively charged particle projected towards west is deflected towards north by a magnetic field. The direction of the magnetic field is

Statement-1 In a region of space, both electric and magnetic field act in same direction. When a charged particle is projected parallel to fields, it moves undeviated Statement-2 Here, net force on the particle is not zero