Topic 2 - Electricity Flashcards
1
Q
Build up of static is caused by what force?
is this a non-contact or a contact force?
A
Friction
contact
2
Q
Which sub-atomic particle is involved in the build up of static electricity
A
Electrons
3
Q
Describe how static electricity is built up
A
insulating materials are rubbed together
1 material will have a positive static charge whilst the other will have an equal negative charge
4
Q
Describe how a spark is produced
A
High potential difference
Electrons jump across the gap between the charged object and the Earth
5
Q
Describe the relationship between like charges and opposite charges
A
Like charges repel
Opposite charges attract
6
Q
As electric charge builds on an object what happens to the potential difference
A
Potential difference between the object and the Earth increases
