Question Electron guns are used in X-ray tubes. The electrons are accelerated through a relatively large voltage and directed onto a metal target, producing X-rays. (a) How many electrons per second strike the target if the current is 4.35mA? (b) What charge strikes the target in 0.68 s?

XQ0F6J The Asker · Physics

Electron guns are used in X-ray tubes. The electrons are accelerated through a relatively large voltage and directed onto a metal target, producing X-rays.

(a) How many electrons per second strike the target if the current is 4.35mA?

(b) What charge strikes the target in 0.68 s?

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Community Answer
POMN9T

a) the current is given as  I=(Q)/(t) I = current = 4.35 mA =4.35*10-3 C/s  Q = charge = ne  n = number of electrons  e = charge of one electron = 1.6*10-19 C (taking magnitude only) t = time taken = 1 sec  I=(Q)/(t) 4.35**10^(-3)=(n**1.6**10^(-19))/(1) n=(4.35**10^(-3))/(1 ... See the full answer