1.

The potential difference applied to an X-ray tube is 5kV and current is 3.2 mA. Then no. of electrons striking the target per sec is :

Answer»

`2xx10^(16)`
`5xx10^(6)`
`1xx10^(17)`
`4XX10^(15)`

Solution :`n=(q)/(E)=("it")/(e)`
`i=3*2xx10^(-3)A t=1s`
`:.n=(3*2xx10^(-3))/(XX1*6xx10^(-19))=2xx10^(16)`


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