Charge is given by:

$\overline{){\mathbf{q}}{\mathbf{=}}{\mathbf{n}}{\mathbf{e}}}$

n = ? (number of electrons).

e = - 1.6 × 10^{-19}C (charge of an electron).

We get **n **by rearranging and substituting:

The charge carried by one electron is e = -1 6 × 10^{-19} C. The number of electrons necessary to produce a charge of -1.0 C is

A) 6.3 × 10^{18 }

B) 1.6 × 10^{9}

C) 6.3 × 10^{9}

D) 1.6 × 10^{19}

E) none of the above

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