Capacitors Flashcards
1
Q
What is capacitance?
A
The charge stored by a capacitor per unit potential difference.
2
Q
What is formed when a capacitor is connected to a power source?
A
A uniform electric field
3
Q
How do you find the relative permittivity / dielectric constant?
A
Find the ratio of the permittivity of the dielectric to the permittivity of free space.
4
Q
How does adding a dielectric improve a capacitor?
A
Polar molecules within the dielectric align with the electric field, such that the positive side of the molecule moves towards the negative plate of the capacitor.
5
Q
What value is the area of a VQ graph?
A
Energy
