Question

An electron gun emits $2.0\times {10}^{16}$ electrons per second. What electric current does this corresponding to?

Answer 1

No. of electrons per second $2\times {10}^{16}$ electrons/sec.

Charge passing per second $=2\times {10}^{16}\times 1.6\times {10}^{-9}\frac{Coulomb}{sec}$

$=3.2\times {10}^9$ Coulomb/sec

Current $=3.2\times {10}^{-3}A$.