Topic 1

Question 1

Electric forces

Answer 1

the attraction or repulsion between objects or particles that have an electric charge

Question 2

Current vs. Static electricity

Answer 2

current- continuous movement of charged particles along a pathway
static- buildup of electrical charges on an object(unbalanced charges)

Question 3

Positive, negative, and neutral charges

Answer 3

Positive- excess positive charge
Negative- excess negative charge
Neutral- balanced positive and negative charge

Question 4

Law of charges

Answer 4

1. Unlike charges attract.
2. Like charges repel.
3. Charged objects attract uncharged (neutral) objects.

Question 5

Conductors vs insulators

Answer 5

conductor- Materials that allow charges to move freely

insulator- materials that do not allow charges to move freely through them

Question 6

Semi vs Super

Answer 6

Semi- higher conductivity than insulators but lower than conductors

Super- little if any resistance to the flow of charges
( take up less space and can carry higher charges)

Question 7

Neutralisation of unbalanced charges

Answer 7

Discharge( not safe, explosions)

Grounding- connecting the object to the earth with a connecting wire( easy, safe)

Ionisation- used for non conductors, produce both positive and negative ions. These ions
are attracted to materials with an opposite charge,
transferring charges until the material is neutralised.