TWO KINDS OF CHARGE

Question 1

What do all materials have?

Answer 1

Positive charge – protons
Negative charge - electrons

Question 2

What is a natural object made up of?

Answer 2

An equal number of electrons and protons is neutral.

Question 3

What do positively charged objects have a deficient of?

Answer 3

electron-deficient

Question 4

What do negatively charged objects have an excess?

Answer 4

Excess of electrons.

Question 5

Describe how objects (insulators) can be charged by contact (or rubbing).
(triboelectric charging)

Answer 5

This means that they can gain or lose negative charge.

When you rub your feet against the carpet, negative charge is transferred to you from the carpet. The carpet will then become positively charged by the same amount.

Question 6

What is Triboelectric charging?

Answer 6

Triboelectric charging is the process of materials becoming charged when they come into contact with other materials.

Materials can be arranged in a triboelectric series according to the likelihood of them gaining or losing electrons.

Question 7

What is the SI unit for electric charge

Answer 7

Coulomb (C)

Question 8

State the principle of conservation of charge.

Answer 8

The net charge of an isolated
system remains constant during any physical process. e.g., two charges making
contact and then separating.