Static electricity - Paper 1 Flashcards

To revise statice electricity (paper 1)

You may prefer our related Brainscape-certified flashcards:
1
Q

What objects can create an electric field?

A

Any charged object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How is the strength of the electric field related to the distance from the object?

A

The further away from a charged object the weaker the field

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is the name of the force when charged objects attract or repel each other? is this a contact or non contact force?

A

Electrostatic attraction/repulsion. it is an example of a non contact force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Sketch the field lines around a positive charge.

A

A radial field with the arrows pointing away from the charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Sketch the field lines around a negative charge.

A

A radial field with the arrows pointing towards the charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How are static charges created?

A

Insulating materials are rubbed against each other. the force of friction can run electrons onto or off the material.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

If an insulator gains electrons what happens to its charge?

A

It becomes negative

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

If an insulator loses electrons what happens to its charge?

A

It becomes positive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

If two positive charges are close to each other, what will happen?

A

They will repel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

If two negative charges are close to each other, what will happen?

A

They will repel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

If a negative and a positive charge are close to each other, what will happen?

A

They will attract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What happens to an object that is isolated from the earth if a static charge builds up?

A

As static charge builds up the potential difference on the object increases. eventually the p.d. gets so large that the charge can jump from the object to the earth in the form of spark.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What do electric field lines show us?

A

The closer the lines the stringer the field/force
If the line get further away from each other the field/force gets weaker.
The arrow heads show the direction of force a positive charge would feel.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is an electric field?

A

The region where a charged object would experience a force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly