Electricity, Magnetism, Thermodynamics Flashcards
1
Q
V =
A
V = IR
2
Q
Electrical power =
A
P = VI P = V^2/R P = I^2*R
3
Q
temperature and resistance have what kind of relationship?
A
linear/proportional/positive
4
Q
current and resistance have what kind of relationship?
A
inversely proportional
5
Q
charge on a capacitor is Q =
A
Q = CV
6
Q
capacitance =
A
C = κε0A/d
A = area of plates D = distance between plates ε0 = permittivity of free space constant (dont need to know) κ = dielectric constant
7
Q
Resistance of wire R =
A
R = ρL/A
ρ = constant based on material A = area of cross section L = length
8
Q
Electric potential energy PE =
A
PE = kQq/r
9
Q
Electrostatic force, F =
A
F = kq1q2/r^2
10
Q
0th law of thermodynamics
A
two bodies in thermal equilibrium are same temperature
11
Q
1st law of thermodynamics
A
energy cannot be created or destroyed
12
Q
2nd law of thermodynamics
A
entropy is always increasing
13
Q
3rd law of thermodynamics
A
at temperature 0, entropy = 0
14
Q
Electromotive force emf =
A
emf = difference in potential between 2 half cells
15
Q
Gibb’s free energy (in electro. cells)
A
delta G = -nF*emf
