Electricity, Magnetism, Thermodynamics Flashcards Preview

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Flashcards in Electricity, Magnetism, Thermodynamics Deck (15):
1

V =

V = IR

2

Electrical power =

P = VI
P = V^2/R
P = I^2*R

3

temperature and resistance have what kind of relationship?

linear/proportional/positive

4

current and resistance have what kind of relationship?

inversely proportional

5

charge on a capacitor is Q =

Q = CV

6

capacitance =

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

Resistance of wire R =

R = ρL/A

ρ = constant based on material
A = area of cross section
L = length

8

Electric potential energy PE =

PE = kQq/r

9

Electrostatic force, F =

F = kq1q2/r^2

10

0th law of thermodynamics

two bodies in thermal equilibrium are same temperature

11

1st law of thermodynamics

energy cannot be created or destroyed

12

2nd law of thermodynamics

entropy is always increasing

13

3rd law of thermodynamics

at temperature 0, entropy = 0

14

Electromotive force emf =

emf = difference in potential between 2 half cells

15

Gibb's free energy (in electro. cells)

delta G = -nF*emf