Capacitance Flashcards
1
Q
What is capacitance
A
The charge stored per unit potential difference
2
Q
What is the unit of capacitance
A
Farad
3
Q
Capacitance of a spherical conductor
A
C=4piconstantr
4
Q
Capacitance in series
A
1/C =1/C1 +1/C2 +1/C3
5
Q
Capacitance in parallel
A
C = C1 + C2 + C3
6
Q
What is elecrtical potential energy/workdone
A
E=1/2QV
E=1/2CV^2
E=1/2Q^2/C
7
Q
Time constant
A
The time taken for the charge of the capacitor to decrease by 0.37 of its original value
8
Q
What is the eq of time constant
A
T=RC
9
Q
What are the capacitor discharge eq
A
V=Voe^(-t/RC)
I=Ioe^(-t/RC)
