Electrostatics

Question 1

What is electrostatics?

Answer 1

The study of electricity at rest

Question 2

Which particles are involved in the charging process?

Answer 2

Electrons

Question 3

When does an object gain a positive charge?

Answer 3

When it has a shortage of electrons

Question 4

When does an object gain a negative charge?

Answer 4

When the object has an excess of electrons

Question 5

What is a conductor?

Answer 5

A material that can allow a current to flow

Question 6

What is an insulator?

Answer 6

A material that does not allow current to flow

Question 7

What are examples of insulators?

Answer 7

Wood
Plastic
Glass
Rubber
Paper

Question 8

What is an example of a conductor?

Answer 8

Metal

Question 9

What is friction?

Answer 9

The force that exists between two objects that have been rubbed together

Question 10

What does friction cause?

Answer 10

A transfer of electrons between the two substances

Question 11

What is a triboelectric series?

Answer 11

The ease with which a substance loses or gains electrons

Question 12

How is a triboelectric series structured?

Answer 12

Those more likely to lose electrons are at the top

Those more likely to gain electrons are at the bottom

Question 13

What materials are at the top of the triboelectric series?

Answer 13

Rabbit fur
Glass
Human hair
Nylon
Wool
Silk
Paper
Cotton

Question 14

What material is in the middle of the triboelectric series?

Answer 14

Steel

Question 15

What materials are at the bottom of the triboelectric series?

Answer 15

Wood
Amber
Hard rubber
Gold
Polyester 
Styrofoam
Polyurethane
PVC
Silicon
Teflon

Question 16

How do charged objects interact?

Answer 16

Like charges repel

Unlike charges attract

Question 17

What happens when a negatively charged object comes into contact with a neutral object?

Answer 17

The electrons on the negatively charged object pushes the electrons on the neutral object away
They will then be attracted to one another

Question 18

What is the magnitude of an electrostatic force affected by?

Answer 18

The size of the charges on the object

The distance between the charged objects

Question 19

What does the size of a charge have to do with its electrostatic force?

Answer 19

The greater the charge, the greater the electrostatic force

Question 20

What does distance have to do with an electrostatic force?

Answer 20

The greater the distance between the charged objects, the less the electrostatic force

Question 21

What is polarisation?

Answer 21

The process whereby a neutral object can be attracted to a negatively charged object

Question 22

What is the principle of conservation of charge?

Answer 22

It states that the net charge of an isolated system remains constant during any physical process

Question 23

What happens when two charged bodies (same size and insulated together) are brought into contact?

Answer 23

There will be a movement of electrons between the two bodies

After separation, they will carry the same charge

Question 24

What formula shows the movement of electrons between two charged objects?

Answer 24

Overall charge is equal to the sum of the charge of both objects divided by two

Question 25

How do we quantify charge?

Answer 25

By using the charge in one coulomb

Question 26

What equation is used to quantify charge?

Answer 26

Charge is equal to the charge of one coulomb times the number of electrons
Q=nqe

Question 27

What is the charge in one coulomb?

Answer 27

1,6 x10^-19C