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A beam of electron is moving with consta...

A beam of electron is moving with constant velocity in a region having electric and magnetic fields of strength `20Vm^(-1)` and `0.5T` at right angles to the direction of motion of the electrons. What is the velocity of the electrons?

A

`20 ms^(-1)`

B

`40 ms^(-1)`

C

`8 ms^(-1)`

D

`5.5 ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
`v = (E)/(B) = (20)/(0.5) = 40 m//sec`.
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