electric fields Flashcards
(6 cards)
1
Q
What do field lines show?
A
direction and strength of a field
2
Q
what is an electric field
A
a region of space where a charged object will experience a force
3
Q
is a negative force attractive or repulsive?
A
attractive
4
Q
what is coulombs law?
A
force between two charges is directly proportional to the size of the charges and inversely proportional to the distance squared between their centres
5
Q
what is the electric potential?
A
at a certain position in a any field, electric potential is the work done per unit positive charge on a positive test charge when its moved from infinity to that point
6
Q
what is the area under an electric potential - distance graph
A
electric potential difference between the two points
