Each electron has a negative charge of 1.6*10^-19 coulomb So the 20 electrons will have a charge of = 20 -1.6 10^-19 = -32 *10^-19 coulomb.
Charge, q = 3.2 × 1 0 − 18 C o u l o mb s ;
The charge of a body that carries 20 excess electrons is approximately − 3.204 × 1 0 − 18 C . This is calculated by multiplying the number of excess electrons by the charge of one electron. Hence, the total charge is negative because there are excess electrons.
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