Electrical Fields Definitions Flashcards
1
Q
A Field
A
The area around an entity or object that can exert an effect on another body by virtue of it being there
2
Q
An Electrical Field
A
Force per unit charge on a positive test charge placed at that point
Unit NC-1
3
Q
Electrical Potential
A
The work done per unit charge on a positive test charge to move it from infinity to that point
Unit JC-1
4
Q
Equipotential
A
Line of constant potential
5
Q
Coulomb’s Law
A
F is proportional to 1/r squared
F is proportional to the product of 2 charges
6
Q
Potential Gradient
A
The change in potential per unit charge over a given distance
7
Q
Permittivity of Free Space
A
Two charges are seperated by a vacuum of air
Unit Fm-1
