Circuits Equations Flashcards
1
Q
Current = ?
A
I = Q / Delta t
2
Q
Kirchhoff’s junction rule
A
I in = I out
3
Q
Kirchhoff’s loop rule
A
V source = V drop
4
Q
Definition of resistance = ?
A
R = resistivity . L / A
5
Q
Ohm’s Law = ?
A
V = IR
6
Q
TRUE voltage of a cell = ?
A
V = Ecell - I . R int
7
Q
Definition of power = ?
A
P = W / t = Delta E / t
8
Q
Electric power = ?
A
P = IV = I^2. R = V^2 / R
9
Q
Voltage drops across circuit elements in series = ?
A
Vs = V1 + V2 + …
10
Q
Equivalent resistance (series) = ?
A
Rs = R1 + R2 + …
11
Q
Voltage drop across circuit elements in parallel = ?
A
Vp = V1 + V2 + …
12
Q
Equivalent resistance (parallel) = ?
A
1/Rp = 1/R1 + 1/R2 + …
13
Q
Definition of capacitance = ?
A
C = Q / V
14
Q
Capacitance based on parallel plate geometry = ?
A
C = Eo . A/d
15
Q
Electric field in capacitor = ?
A
E = V / d
