Understanding Charges & electrostatic charging

Positive charges cannot move to charge a material because

• positive charges has a low energy level

• positive charges are not strong enough to move

• Changes in proton number will cause the atom to change into another element

• materials cannot be negatively charged

a material becomes negatively charged when

• electrons move into it

• electrons move away from it

• positive charges move into it

• positive charges move away from it

In non-metals such as hair and balloon, electrons are transferred from one material to another

• by friction

• by magnetism

• by gravity

• by mutual attraction

Charges are measured in units of

• ampere

• coulomb

• positive and negative

• lumens

Unlike charges

• attract

• repel

• flow

• transfer

Like charges

• attract

• repel

• flow

• transfer