Manipal MET2018PhysicsMagnetic Effects of Current
A charged particle travels along a straight line with a speed v in a region where both electric field E and magnetic fields B are present. It follows that
Options
- A| E |=v| B | and the two fields are parallel
- B| E |=v| B | and the two fields are perpendicular
- C| B |=v| E | and the two fields are parallel
- D| B |=v| E | and the two fields are perpendicular
Correct answer
B. | E |=v| B | and the two fields are perpendicular
Step-by-step solution
Force due to magnetic field is aligned F & =q v B & =90^ F & =q v B....(i) aligned when Force due to electric field E is F=q E ....(ii) Equating Eqs. (i) and (ii), we get | E |=v| B |