Conservation of Charge Quiz

Questions and Answers

What occurs to the charges of two objects when they are rubbed together?

Both objects lose their charges completely.

Both objects gain a positive charge.

One object gains a positive charge and the other gains a negative charge. (correct)

Both objects remain uncharged.

What type of charge does a glass rod acquire when rubbed with silk?

Indeterminate charge.

Positively charged. (correct)

Neutral.

Negatively charged.

What happens to the silk when it is rubbed with a glass rod?

It remains uncharged.

It gains free electrons from the rod. (correct)

It becomes positively charged.

It loses free electrons to the rod.

Which statement is true about the conservation of charge during rubbing?

The total charge before and after rubbing is the same. Signup and view all the answers

Which of the following statements accurately describes free electrons?

They can freely move from one atom to another. Signup and view all the answers

During the rubbing process, what must happen to maintain conservation of charge?

Electrons must be transferred between the two objects involved. Signup and view all the answers

What kind of charge does an ebonite rod gain when rubbed with fur?

Negatively charged. Signup and view all the answers

When two objects with similar charges come close to each other, what will most likely occur?

They will repel each other. Signup and view all the answers

What occurs at the atomic level during the charging process by rubbing?

Electrons are transferred from one object to another. Signup and view all the answers

Why does a glass rod become positively charged when rubbed with silk?

It loses electrons to the silk. Signup and view all the answers

Study Notes

Conservation of Charge

Objects start uncharged, resulting in a net charge of zero.
Rubbing two objects generates equal but opposite charges on each object.
The total charge before and after rubbing remains unchanged, illustrating the principle of conservation of charge.

Examples of Charge Transfer

Glass rod and silk:
- Glass rod becomes positively charged after losing electrons.
- Silk becomes negatively charged after gaining those electrons.
Ebonite rod and fur:
- Ebonite rod gains electrons and becomes negatively charged.
- Fur loses electrons and becomes positively charged.

Atomic Structure and Charge Transfer

Atoms are neutral, comprising protons (positive) and neutrons (no charge) in the nucleus, with electrons (negative) orbiting around.
Electrons typically equal the number of protons in a neutral atom, but some electrons can leave their atoms.
Free electrons can transfer between rubbed objects, causing one to gain negative charge and the other to gain positive charge.

Summary of Electron Movement

During rubbing:
- Electrons from the object with a weaker hold (e.g., silk or fur) are transferred to the stronger hold object (e.g., glass or ebonite).
Result is a balance of charge transfer, leading to opposite charges on the two objects involved.

Description

Test your understanding of the principle of conservation of charge with this quiz. Learn how rubbing objects together leads to charge transfer and discover the significance of balanced charges. This quiz will help reinforce your knowledge of electric charges.