A charged particle with charge q enters a region of constant, uniform and mutually orthogonal fields E and B with a velocity v perpendicular to both E and B, and comes out without any change in magnitude or direction of v. Then

Magnetic Effects of Current and Magnetism: JEE Main 2007 Physics question

JEE Main 2007 · Annual, Paper 1 · Q7738

JEE Main 2007Annual, Paper 1PhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002

A charged particle with charge

q

enters a region of constant, uniform and mutually orthogonal fields

\overrightarrow E

and

\overrightarrow B

with a velocity

\overrightarrow v

perpendicular to both

\overrightarrow E

and

\overrightarrow B,

and comes out without any change in magnitude or direction of

\overrightarrow v

. Then