Question

Common static electricity involves charges ranging from nanocoulombs to microcoulombs. How many electrons are needed to form a charge of -7.08 uC?

Round your answer to 3 decimal places

Answer 1

$$Q=Ne,$$ $$N=\dfrac{Q}{e}=\dfrac{-7.08\cdot10^{-6}\ C}{-1.6\cdot10^{-19}\ C}=4.42\cdot10^{13}\ electrons.$$