A charged particle travels in a gravity-free space without any change in velocity. Which of the following could be possible?

Step-by-step solution

The net force on a charged particle in an electric and magnetic field is given by the Lorentz force: F = q( E + v B ) For the particle to travel without any change in velocity, the net force must be zero, i.e., F = 0 . If E = 0 and B = 0 , then F = 0 . This is possible. If E = 0 and B 0 , then F = q( v B ) . If the particle moves parallel or anti-parallel to the magnetic field ( v B ), then v B = 0 and F = 0 . This is possible. If E 0 and B 0 , then F = q( E + v B ) . If E = -( v B ) , which happens when E , v , an