Electric Fields (Triple)

Question 1

RECAP:
when two insulators are rubbed against eachother, what happens?
what do we call this

Answer 1

electrons pass from one to the other insulator

when the insulator gains electrons becomes negatively charged and when it loses electrons it becomes positively charged

this is called static electricity

Question 2

there are 2 spheres
when with a positive charge and one with a negative charge
what is between these 2 spheres?
what do we call this type of force

Answer 2

a force of attraction, opposite charges attract.
this is called a non contact force because the 2 spheres are not touching
a non contact force

Question 3

what is the reaction between 2 positive spheres like?
what is the force called between them?
what do we call this type of force?

Answer 3

the same charges repel
there is a force of repulsion between the two spheres
a non contact force

Question 4

a positive charges object is shown on a question.
it is completely isolated from any other object, this charged object has an electric field around it
what does it mean to have an electric field

Answer 4

means that if we place another charged object near it, a force of repulsion will repel away from the charged object because the objects have the same type of charge

Question 5

if 2 objects have the same type of charge, what force will be present when near eachother

Answer 5

a force of repulsion

Question 6

how are electric fields shown in science?

Answer 6

field lines
badly drawn but u get the idea

             \     |    /
              ^   ^   ^
                \  |  /
————
                /  | \
               /.  |. \

Question 7

how must the lines be , to the subject

Answer 7

they must be perpendicular to the subject (90° angle)

Question 8

forces of attraction are shown on the ______ by what

forces of repulsion are shown on the_______ by what

Answer 8

forces of attraction are shown on the field lines by arrows pointing inwards to the charged object
forces of repulsion are shown on the field lines by arrows pointing away from the charged object

Question 9

how can we get a stronger force between 2 oppositely charged objects.

Answer 9

by decreasing the distance between them

Question 10

2 objects experience a very strong force of repulsion,

explain why

Answer 10

the positive object experiences a strong force of repulsion because it’s CLOSE to the central positive charge

Question 11

if an object is further away from the central charge, will it experience a strong or weak force towards the central charge?

Answer 11

a weak one