Question

When a glass rod is rubbed with a piece of silk cloth the rod

• A. and the cloth both acquire positive charge.
• B. becomes positively charged while the cloth has a negative charge.
• C. and the cloth both acquire negative charge.
• D. becomes negatively charged while the cloth has a positive charge.

Answer 1

The correct option is B

becomes positively charged while the cloth has a negative charge.

Charging by friction

1. Electrons are transmitted from one body to another when two various insulating materials are rubbed together.
2. Charging by friction is the name given to this process.
3. Electrons are transported from a plastic rod to a piece of cloth, for instance, when the two objects are rubbed together, the fabric is negatively charged and the rod is positively charged.
4. When a glass rod is rubbed with silken clothing, the glass loses electrons quickly, and the silk absorbs electrons from the glass rod.
5. The glass rod becomes positively charged after rubbing, whereas the silk becomes negatively charged.
6. As a result of the electron losses, glass acquires a higher order than silk.
7. As a result, when glass is rubbed, it takes on a positive charge whereas silk takes on a negative charge.
8. Equal yet opposing charges are produced on both of them.

Therefore, the correct option is B