Question
An electron gun emits 2.0 × 1016 electrons per second. What electric current does this correspond to?
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Answer
No. of electrons per second = 2 × 1016 electrons/ sec. Charge passing per second $=2\times10^{16}\times1.6\times10^{-9}\frac{\text{coulomb}}{\text{sec}}$
$=3.2\times10^{-9}$ Coulomb/ sec
Current $=3.2\times10^{-3}\text{A}.$Need a full question paper?
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