Capacitance Flashcards
1
Q
What is a capacitor?
A
A device for storing electrical charge and energy.
It is used in power supplies, timing circuits, and back up power supplies
2
Q
What is capacitance?
A
The charge stored per unit of potential difference change
3
Q
What can you add in between plates to increase capacitance?
A
Dieleectric
4
Q
What are the 3 energy equations?
A
U=0.5QV
U=0.5CV^2
U-0.5Q^2/C
5
Q
What is the equation for capacitors in parallel?
A
Ct=C1 + C2 +C3
6
Q
What is the equation for capacitors in series?
A
1/Ct= 1/C1 + 1/C2 +1/C3
7
Q
What is the definition of electric field strength?
A
The force per very small unit of positive test charge placed in a field
8
Q
What is the equation for electric field strength?
A
E=F/Q
9
Q
How do you calculate time from RC?
A
0.69RC
