Question

A paper is rubbed with a wood and the fur acquires a charge of magnitude 5.26nC.

a. Did the paper gain or lose electrons?

b. How many electrons were transferred during the process?

c. What is the change in the mass of the paper?

d. What is the change in the mass of the wood?

Answer 1

a. The paper gain electrons.

b. $N=Q/e=3.25·10^{10}.$

c. $m=m_eN=3·10^{-20}\text{ kg}.$

d. $m=m_eN=3·10^{-20}\text{ kg}.$