Electric fields

Question 1

What is an electric field

Answer 1

A region in which an electrically charged object experiences an electrostatic force

Question 2

What can be used to show an electric field around an object

Answer 2

Field lines

Question 3

How to draw field lines

-always go from p… to …
-always at a … angle to the …
-the … the lines are the stronger the …

Answer 3

-always go from positive to negative
-always at a right angle to the surface
-the closer the lines are the stronger the field

Question 4

What happens when a charged object is placed in an electric field of another object

Answer 4

It experiences a force

Question 5

What happens if you increase the distance between charged objects

Answer 5

The strength of the field decreases and the force between them gets smaller

Question 6

Do electric fields interact with eachother

Answer 6

Yes

Question 7

How are sparks caused

-when there is a … enough … difference between a c… object and the earth/… object
-a high … causes a strong … field between the charged and … object
-the … field causes i… (where … in the air are r..)
-when air is … a current can … through it creating a …

Answer 7

-when there is a high enough potential difference between a charged object and the earth/earthed object
-a high pd causes a strong electric field between the charged and earthed object
-the strong field causes ionisation (where electrons in the air are removed)
-when air is ionised a current can flow through it creating a spark