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The potential difference applied to an X...

The potential difference applied to an X-ray tube is 5 kV and the current through it is 3.2 mA. Then the number of electros striking the target par second is

A

`2xx10^(16)`

B

`5xx10^(6)`

C

`1xx10^(17)`

D

`4xx10^(15)`

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The correct Answer is:
A
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