22. Electric fields Flashcards
(6 cards)
1
Q
What is an electric field created by?
A
Charged objects
2
Q
Define electric field strength
A
The force experienced per unit positive charge at that point
3
Q
What is the equation for electric field strength?
A
E = F/Q
4
Q
What is the direction of an electric field at a point?
A
The direction in which a positive charge would move when placed at that point
(+ve —> -ve)
5
Q
What is Coulomb’s law?
A
Any two point charges exert an electrostatic (electrical) force on each other that is directly proportional to the product of their charges and inversely proportional to the square of the distance between them
6
Q
What does ever letter stand for in F = Qq/4πe0r2?
A
F = Electrostatic force
Q and q = charge of the two objects
r = distance between the two objects
