The potential difference applied to an \( X \)-ray tube is \( 5 \mathrm{kV} \) and the current t...

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The potential difference applied to an \( X \)-ray tube is \( 5 \mathrm{kV} \) and the current through it is \( 3.2 \mathrm{~mA} \). Then the number of electrons striking the target per second is
(A) \( 2 \times 10^{16} \)
(B) \( 5 \times 10^{16} \)
(C) \( 1 \times 10^{17} \)
(D) \( 4 \times 10^{15} \)
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