subject Physics 205
TESTDate April
HOW
28
MODULES
Ipsolve
Ex M Final
classProfessor
STUDYTIME 7 pm
Formulas
Magneticforce on charged
particle
chapter 28 Magnetic fields
I
Righthand rule
EE
TxB
Tesla
i ryBz v2By
j vzBx vxBz
go B
magnitude of magneticforce
aims.no
E xBy ryBx
SI unit of a magnetic field B
Lorentz force experiencedwhen a chargedparticleismovingin a region
where bon an electric andmagneticfields arepresent
pathofparticles
radius r
1
w
angularfrequency
peta 375
Lorentz force
magneticfields lines
E aE at B
the magnitude of torque will be zero when manet
to the plane of theloop
magneticforceon a straight
Thedirectionof rotation of theloop is counter clock wise decreasingo
segmenty
a
Magneticforce in a wire of
n
arbitraryshape
r
2h
1
ggggifarrisin9cond
1
5
1
7 5Euler
Nettorque on current loop
fpÉf
magneticdipolemoment co
É FEB
potentialenergy
u
ni B
subject Physics 205
TESTDate April
HOW
29
Ipsolve
MODULES
STUDYTIME 7 pm
as
p
Face
Biot savartlaw isusedto calculate the magneticfield ata
p
I
I
iiiii
fjiif.fiifI
B atcenterof currentloop
B
YE cat
2
o
24 9
magnitudesof magneticfields
B
4
sine
siness
magneticforceper unitlength
B as
is
in a sense aemmneanyappyingmengnna.name
to one of the coils
MOI
Magneticfieldinside a toroid
B Mgt
is perpendicular to theplane of the loop a airected righthandrule
will Tho TagLiciÉaÉpÉÉÉ
m a
ampere's law
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is
1 41 9
Es Mg a'a detectors
Ampere'slaw describes the creation of magneticfields
I EE E
Formulas
Biot Savart law
Chapter 29 sources of the magnetic field
For othergeometries
Ex M Final
classProfessor
ÉÉÉ
fÉfpfgfÉ
gg
Effance
magneticmen at a pointinsaeno
B Mo
I
mon I
magneticflux
O
B at
TESTDate April
subject Physics 205
MODULES
HOYIpsolve
Chapter 30
30
Ex M Final
classProfessor
STUDYTIME 8pm
Formulas
total magnetic flux throughloop
Faraday's Law
yoggy
Totalmagnetic flux depends on the anglebetween the
magneticfield the normal to thesurface of the loop
I
Bacoso
ifGrega for nonuniformmagneticsfilm
Fraday's law states that the emf induced in a circuit is proportional
to therate of change of magneticflux throughthe circuit
B.at
Is
aninduced emf will occur when any of the followingchangewithtime
magnitude of is
area nausea circuit
Angle between is and thenormal
Lenz's law statesthat thepolarityof induced emf in a loop creates a
current whichproducesa magneticfield that opposes the change in flux
IE
Eigg
motional emf
Ber
e
its 1
an example of Lena's law
when the switch is open
ppm
Yangieff
magnen.ee
iIoi
In Jere
ein
iei
ne's
be directedinto
nI
it c sea
by the outer coil including the area of the inner coil
ByFaraday'slaw theincreasingfluxcreatesinducedemf and current
in the inner coil
induced current
BY
I
no current
grEnqiqe
Fraday's law generalform
seas
Looprotatingwith angularspeed
E NA Basin We
Averageinducedemf
Earg
N
If Isi
IB ABcosowhenangle
instantaniousvalue of induced e
e
N
Ba cos e
subject Physics 205
TESTDate April
HOW
31
Ipsolve
chapter31
MODULES
STUDYTIME 7 pm
symbosting
Iffy
Theinduction as of a givendevice depends
on itsphysicalcaracteristics and is a measure of the opposition of the
device to changein the current
fluxusing IB
pluginto formula
SB.at
s establishes a series recircuit
batteryfromthe
sa willremove
the
s
0.632
circuity
E
increase of current when
switched is moved from
open to position a
Formulas
self induced emf
inductance
Finagntetic
Ex M Final
classProfessor
I willmost
s not beconstant
in
I
L
element
inductance
Effircuit
ai t
L
inductance of a uniformly won
solenoid
a
no
L monzae monar
or
52
self
er
current increase in RL
o
from
mttefftom.mn
Ect
i
toz
e.tt
time constant of circuit
to reach 63.2 of its finalvalue
L
R
currentdecay moved1 to 2
Ee th
i
t
Energystored density
stored u Eliz
Density
ups
22
Naturalfrequency oftransfer of
energy
w
Vic
TESTDate April
subject Physics 205
MODULES
HOYIpsolve
chapter 32
32
Ex M Final
classProfessor
STUDYTIME 7 40pm
Formulas
Ril ore
whenthere's a resistor
alternating current circuits
is
sin
i
iii
Therectanglesnowsthe elements maybe a resistor r capacitor c or an inductor a whenthere's an inductor
Thecurrentfrequencyisdeterminedbythe acsourcefrequency
Aphasordiagram b hasa lengthwhich isproportionalto themagnitudeof the
current orvoltagewhichit represents a rotatescounter clockwiseaboutthe
commonoriginwiththe samefrequencycus of the alternatingsource
thedirectionof thephason inpurple isusedasthereferencedirectionto establishthe
Em s
whenthere'sa capacitor
correctphasedifferences whichrepresentsthe voltagedropsacrosstheelements the
instantaniousvalues aregivenbythe projectionsalongtheverticalaxisof corresponding
gymgegncu.ee
an
man
phasorian
moveleadsthecurrentby ao
g
2 onelags the current by ao
Imag we
man
is
capacitiveiesitance
EanETnoreitinteriiiaitrien
exe
astimeincreases thevoltageamplitudesremainconstant but the instantaneousvalues
willvarysinusoidally withtime
Themaximumvoltage isfoundbyaddingour on a ove as vectorquantities the
maximumappliedvoltagedoesnotequalthesum of individualmaxvoltages
ovmax remax remax vimax
fqfffffmga
fggs.gg
cone x are x are
Is
f
phaserelationships
YEE
Theinstantanousappliedvoltagedoes not equalthesum of the instantanous
voltagesacrossthe individualcomponents
iiiiiiis
a
of
maximumvoltage
resistor vmax Imax R
manormaneman
i hasthesameamplitudea phaseateverypoint thephase
angle d isthedegreebywhichthecurrentlagstheappliedvoltage
capacitor ormax Imax x
Impendance a
recommendedproceduresto solve Acproblems
calculate themostunknownavantatiessuch as x x xo aspossible
whencalculatingxc the capacitanceshould be expressedasfarads
z vrztcxex.ge
Apply or Iz to the portionof the circuitof interest if youwant to know
thevoltagedropacrossthe combination of aninductor a resistor theequation maximumcurrent
reduces to or IVra xe
Imax ovzax
2
Phaseangle
1
a tan
x
2
In
subject Physics 205
TESTDate April
HOW
33
Ipsolve
Chapter 33
MODULES
STUDYTIME 8 pm
Electromagneticwaves
Maxwell'sequationsdescribesanelectromagneticphenomena electromagneticwavesare a
naturalconsequenceoftheselaws
Thespectrumof electromagneticwaves
radiowaves nioumsxsno.im electricchargesaccelerating antenna
Ex M Final
classProfessor
Formulas
Maxwell
911
85 at
maxwej.se
surfaceintergrass
o
ineintergrais
f1nsai
85 as not to no E
noum electronicdevices
infraredwaves o s mix in to m produces byhigh
temperatureobjectsa molecules
electronsinatoms molecules equationfor electromagneticwaves
visiblelight
an
rearrangement
axiom
of
x
ioem
ultraviolet ou wavesnano m x nexioum radiationfromthe sun
no to
E
x rays to8msx ioem whenhighenergyelectronshit atargetofnignatomicno
Gamma
no um emmitedbyradioactivenuclei
no to
raysintotom
microwaves v0.3max
speedof electromagnetic waves
c véono
I.IE
ratioofmagnitudes
c
0
