Electricity Flashcards
1
Q
What does the separation of electric field lines show?
A
The relative strength of the field.
2
Q
Define Electric Potential.
A
Electric Potential = Potential Energy / Unit Charge and is the amount of energy needed to bring a unit positive charge to that point from infinity.
3
Q
What do electric field lines show?
A
The direction of force acting on a positive charge at that point.
4
Q
What is the force between two point charges?
A
F =1/4πe0 X Q1Q2/r^2
5
Q
What does Coulomb’s Law describe?
A
The force between two point charges in a vacuum.
6
Q
Define Electric Field Strength (and give units).
A
Electric Field Strength is the force per unit positive charge (N/C).
7
Q
What equation describes electric field strength in a uniform field between parallel plates?
A
E = V/d
