Homework Answers
here,
current , I = 1 uA = 1 * 10^-6 A
time , t = 17.8 min = 1068 s
the charge passed , Q = I * t
Q = 1 * 10^-6 * 1068 C
Q = 1.068 * 10^-3 C
the number of electrons impacted , n = Q/e
n = 1.068 * 10^-6 /( 1.6 * 10^-19)
n = 6.68 * 10^12 electrons
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