Question

An electron has a charge of −1.6 × 10−19

c. how many electrons would be needed to produce a net charge of -5.5 × 10−7 c? round the final answer to one decimal place.

Answer 1

-4.8 x 10^-6 / -1.6 x 10^-19 electrons
turns to
3 x 10^13 electrons

Answer 2

electrons are negatively charged

an electron has a charge of - -1.6 x 10⁻¹⁹ C

the net charge to be produced is -5.5 x 10⁻⁷ C

net charge is produced by several number of electrons

to find the number of electrons required - divide the net charge by the charge of 1 electron

number of electrons = -5.5 x 10⁻⁷ C / -1.6 x 10⁻¹⁹ C = 3.4 x 10¹² electrons

answer is 3.4 x 10¹² electrons