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Physics 22 Online
OpenStudy (anonymous):

In a fluorescent tube of diameter 1 cm, 2.2 × 10^18 electrons 1/s (with a charge of −e) and 2.3 × 10^18 positive ions 1/s (with a charge of +e) flow in opposite directions through a cross-sectional each second. What is the current in the tube?

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