When a glass rod is rubbed with silk and becomes positively charged,
a. electrons are removed from the rod.
b. protons are removed from the silk.
c. protons are added to the silk.
d. the silk remains neutral.
well, electrons have negative charge, so what do you think?
When a glass rod is rubbed with silk and becomes positively charged, the correct answer is (a) electrons are removed from the rod.
Explanation:
When two objects come in contact and get rubbed against each other, a transfer of charges occurs. In this case, as the glass rod is rubbed with silk, some of the electrons from the atoms in the glass rod are transferred to the silk. Since electrons carry a negative charge, when they are removed from the glass rod, the rod becomes positively charged.
The triboelectric series helps determine which material gains electrons and becomes negatively charged, and which material loses electrons and becomes positively charged during friction. In the triboelectric series, silk is ranked higher than glass, which means silk has a higher tendency to gain electrons. Therefore, as the glass rod and silk are rubbed together, the silk gains some electrons, making the glass rod positively charged.
So, to answer the question, when a glass rod is rubbed with silk and becomes positively charged, it is because electrons are removed from the rod.