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An electron moving with a speed u along ...

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

`v=u at ygt0`

B

`v=u at ylt0`

C

`vgtu at ygt0`

D

`vgtu at ylt0`

Text Solution

Verified by Experts

The correct Answer is:
b
The force acting on the electron will be perpendicular to the
direction of velocity till the electron remains in the magnetic
field. So, the electron will follow the path as given.
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