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The velocity of a charged particle to keep moving in the same direction, in a region where electric and magnetic fields are perpendicular to each other, is _______________

The velocity of a charged particle to keep moving in the same direction, in a region where electric and magnetic fields are perpendicular to each other, is _______________ Correct Answer E/B

As we know, Lorentz force = qE + q (v X B). Now, as we know, for the particle to move in same direction, the net force on it should be zero. Therefore, qE + q (v X B) = 0 Solving for v, we get, v = E/B.

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