Question

If a glass rod is rubbed with silk, it acquires a positive charge because :

• A. Electrons are added to it
• B. Protons are removed from it
• C. Protons are added to it
• D. Electrons are removed from it

Answer 1

The correct option is D Electrons are removed from it

Glass rod acquires positive charge, due to loss of electrons during rubbing.

$\Rightarrow$ The electrons lost by glass rod gets transferred to the silk, thus making it negatively charged.

$\begin{array}{c}\text{Why this question ?}\\ \text{Caution: Electrons are the mobile charges, which get}\\ \text{transferred during interaction. Thus it may be}\\ \text{very clear that protons are not getting added.}\end{array}$