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A charged particle goes undeflected in a...

A charged particle goes undeflected in a region containing electric and magnetic field. It is possible that
(i) `vec(E) || vec(B). vec(v) || vec(E)`
(ii) `vec(E)` is not parallel to `vec(B)`
(iii) `vec(v) || vec(B)` but `vec(E)` is not parallel to `vec(B)`
(iv) `vec(E)||vec(B)` but `vec(v)` is not parallel to `vec(E)`

Text Solution

Verified by Experts

`vec(E) || vec(B), vec(v)|| vec(E) or vec(E)` is not parallel to `vec(B)`
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