Circuits Flashcards
1
Q
current
A
I = q/t
2
Q
Voltage
A
V = IR
3
Q
resistance
A
R = (resisitivity) * L/A
4
Q
conductivity
A
Conductivity = 1 / (resistivity)
5
Q
resistance in series
A
Req = R1 + R2 + R3…
6
Q
resistance in parallel
A
1/Req = 1/R1 + 1/R2 + 1/R3….
7
Q
charge stored on capacitor
A
Q = CV
8
Q
capacitance of a parallel plane capacitor
A
C = (kEoA)/d
9
Q
capacitance in parallel
A
Ceq = C1 + C2 + C3…
10
Q
capacitance in series
A
1/Ceq = 1/C1 + 1/C2 + 1/C3…
11
Q
electrical power
A
P = IV P = I2 * R P = V2 / R
12
Q
electrical energy
A
U = 1/2 * Q2/C U = 1/2 * CV2 U = 1/2 * QV
13
Q
current rms
AC circuits
A
I(rms) = I(max) / (rad 2)
