Question

1)A plastic rod is rubbed against a wool shirt, thereby acquiring a charge of -0.7 µC. How many electrons are transferred from the wool shirt to the plastic rod?

Answer 1

Answer:

electrons are transferred from the wool shirt to the plastic rod is  4.375 × $10^{12}$ electrons

Explanation:

given data

Amount of charge transferred Q = -0.7 μC  = -0.7 × $10^{-6}$ C

electrons of charge e = -1.6 × $10^{-19}$ C

solution

we apply formula here for  total charge of electrons that is

Q = n × e   ...................2

here n is no of electron that is

n = $\frac{Q}{e}$    

put here value

n = $\frac{-0.7*10^{-6}}{-1.6*10^{-19}}$  

n = 4.375 × $10^{12}$ electrons

so here electrons are transferred from the wool shirt to the plastic rod is  4.375 × $10^{12}$ electrons