In a region, steady and uniform electric...

In a region, steady and uniform electric and magnetic fields are present . These two fields are parallel to each other. A charged particle is released from rest in this region . The path of the particle will be a

helix

straight line

ellipse

circle

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The correct Answer is:

The magnetic field produces a forces `F=qvB sin theta` on the particle. But`theta=othereforeF=0`Hence only electric feild acts on the charged particle and it moves along a straight line.

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