Electric Fields Flashcards
1
Q
Electric field strength
A
Force per unit +ve charge
2
Q
What does Capacitance depend on?
A
Permittivity of the dielectric + dimensions of capacitor
3
Q
What is electric potential?
A
The W bringing a unit +ve charge from a point of infinity to that point in the field
4
Q
Electric potential energy
A
= Vq
Change in Vq = W
5
Q
Difference between gravitational and electric fields
A
- gravity = only attractive
- electric can be shielded from
- size of E force depends on medium between charges
