The electric current existing in a discharge tube is 2.0 μA. How muc – InterviewSolution

1.

The electric current existing in a discharge tube is 2.0 μA. How much charge is transferred across a cross-section of the tube in 5 minutes ?

Answer»

i' = 2 μA, t = 5 min = 5 x 60 sec.

q = i t = 2 x 10^–6 x 5 x 60

= 10 x 60 x 10^–6 c = 6 x 10^–4 c

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