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Electrons are caused to fall through a p...

Electrons are caused to fall through a potential difference of 1500 V. If they are initially at rest, their final speed is

A

`23 xx 10^7 m/s`

B

`2.3 xx 10^7 m/s`

C

`32 xx 10^7 m/s`

D

`3.2 xx 10^7 m/s`

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