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An electron is fired through a region of...

An electron is fired through a region of crossed electric and magnetic field (0.05 T) . The electric field is formed between two plates separated by a distance of 2 mm having a P.D. of 125 V . The speed of the electron is

A

`12.5 xx 10^(6)` m/s

B

`1250 ` K m/s

C

125 K m/s

D

`1.25 xx 10^(7)` m/s

Text Solution

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The correct Answer is:
B
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