Question

What happens when a glass rod is rubbed with silk?

• A. Gains protons from silk
• B. Gains electrons from silk
• C. Gives electrons to silk
• D. Gives protons to silk

Hint:

Rubbing materials like glass and silk results in the transfer of electrons, with the glass rod becoming positively charged and the silk negatively charged.

Answer 1

The Correct Option is C

Step 1: Understanding the Process
When a glass rod is rubbed with silk, electrons from the glass rod are transferred to the silk.
This results in the glass rod becoming positively charged and the silk becoming negatively charged.
Step 2: Why Other Options are Incorrect
Option (a) is incorrect as protons do not transfer between objects during rubbing; only electrons are transferred.

Option (b) is incorrect because the glass rod loses electrons, not gains them.

Option (d) is incorrect because protons are not transferred in this process.

Step 3: Conclusion
Thus, when a glass rod is rubbed with silk, the glass rod gives electrons to the silk.