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Physical Chemistry

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12 Nov 2011 21:21:17 IST

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The potential difference applied to an X-ray tube is 5kV and the current through it is 3.2 mA. Then the number of electrons striking the target per second is (A) 2 x 1016 (B) 5 x 106 (C) 1 x 1017 (D) 4 x 1015

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pranjal shukla

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Joined: 14 Sep 2011

Posts: 68

12 Nov 2011 21:49:29 IST

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well bro,what is the use of 5kv.

as,1.6x(10 to the power of -19)coulomb=1electron

therefore,3.2x(10 to the power of -3)=1/1.6x(10 to the power of -19)x3.2x(10 to the power of -3)=2x(10 to the power of 16)electrons.

pls reply soon....

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