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The speed acquired by a free electron wh...

The speed acquired by a free electron when accelerated from rest through a potential difference of 100 V is :

A

`6 xx 10^(6) m s^(-1)`

B

`3 xx 10^(6) m s^(-1)`

C

`4 xx 10^(-5) m s^(-1)`

D

`2 xx 10^(3) m s^(-1)`

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