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That PDF covers the all formulas for electric and magnetism lecture
Typology: Study notes
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Electric field and Force
2 0
q E r r
F qE
line (^2 0) r
E sheet / 2 0
dipole p E , dipole pE sin
(^) E E A EA cos
E E dA
encl
0
Gauss's law
q E dA
Electric Potential
2
1
U W F dr
q q 0 U k r
U q 0 V k q r
2
1
V E dr
E V , i j k x y z
Capacitance
0
d V
0 0
0
Qd V Ed
2 1 2 1
1 2 2 0 energy density in vacuum E
1 2
series C eq C C
Circuits and Ohm’s law
d
dq I nq A dt
I J A
E 1
J
2 2 V P IV I R R
1 2
1 1 1 parallel R eq R R
/ 0 1 charging
t Q t Q e
/ 0 charging
t I t I e
/ 0 discharging
t Q t Q e
/ 0 discharging
t I t I e
0 0
Q I
Magnetism
FB q B
FB I B
d (^) B B dA
0 2 Biot-Savart Law
Id r dB r
mag.dipole
U B B cos
0 wire 2
I B r
Induction
d B
dt
-
d B E dr dt
d E I dt
2 21
1
N B L I
dI L dt
(^12)
2
U LI
2
0
in vacuum 2
B
u
2
in dielectric 2
B
u
L
R
/ 1 increasing current
t I e R
/ 0 decaying current
t I t I e
Electromagnetic Waves
0 0
c
E c B k
0
Poynting vector
2 2 0 0 0
(^2 )
c E cB I S
1 dp S P A dt c
Fundamental Constants
Quantity Symbol Approximate Value
Gravitational acceleration (Earth’s surface) g 9.81 m/s^2
Elementary charge e 1.60 10 ^19 C
Electron rest mass me 31 9.110 10 kg
Proton rest mass mp
27 1.673 10 kg
Neutron rest mass mn
27 1.675 10 kg
Atomic mass unit u 1.661 10 ^27 kg
Speed of light in vacuum c 3.00 108 m/s
Coulomb constant
9 2 2 8.99 10 N m / C
Permittivity of free space
12 2 2 8.85 10 C / N m
Permeability of free space
7 4 10 T m/ A
Electron-volt 1 eV 1.60 10 ^19 J
Metric (SI) Multipliers
Prefix Abbreviation Value
peta P 10 15
tera T 10 12
giga G 10 9
mega M 10 6
kilo k 10 3
hecto h 10 2
deca da 10 1
deci d 10
centi c 10
milli m 10
micro μ 10
nano n 10
pico p 10
femto f 10