Question

An electron moving with a speed u along the positive x-axis at `y=0` enters a region of uniform magnetic field which exists to the right of y-axis. The electron exits from the region after some time with the speed v at coordinate y, then

A. `vgtu,ylt0`
B. `v=u,ygt0`
C. `vgtu,ygt0`
D. `v=u,ylt0`

Answer 1

Correct Answer - d
y will be less than zero. Speed will remain same.
The trajectory will be as shown in Fig.
.