alternating current cbse class 12 physics , cheat sheet, Cheat Sheet of Physics

Handwritten notes of Alternating Current for Class 12 CBSE Physics, prepared in a clear, neat, and exam-focused manner. These notes cover all important topics including alternating current and voltage, AC generator, RMS and peak values, reactance, impedance, LCR circuits, phase difference, resonance, power in AC circuits, transformers, and important derivations. Includes formulas, diagrams, graphs, numericals, and NCERT-based concepts for quick revision and strong conceptual understanding. Perfect for board exam preparation, last-minute revision, and scoring full marks in CBSE exams.

Typology: Cheat Sheet

2022/2023

Available from 05/10/2026

anonymous312
anonymous312 🇮🇳

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Alteumatinp uwunl
Cuunt_that
chamgs
diustton usith
tims.Vauius
lks
aiue
pnelion
t
A
LA
eumt
'AC
De(Duuet
Cuuuwt).
Luuut
UA
A
0mly
duuton
m DO.
tletius
law
in
ludh
diutous
Hiekkaluy
ltntimg
Cuuut
(
CuwmF
Qst
ususeut
AC -
Mamluol
umams
Lontau
Aan
lu
atpuud
jin Jattwue8
Magniuds
auiA
oith
fuma.
Cam
m
Juu
stdultd
An
ADmutimsd
th
poduiuu
w
JA
MOuud
Aometims
Magatian
amd
N
AC
SouML=
J
douu
ihat
jA
Aahall,
e
AuAAlying
Anauialle kaoen,
(ushiiuu
Wm
s
Vu
ptak
valu
v
By
uaiug
kiuchsds
Lau
Vm
Vn
sin
lt>Em
timlee
m=
vm/R
huno
u
uunn
also
vausKL
Ain.=i=imaiulo
tt
(n
tt)
oltag
amd
wt
L
mhaAL
uth
ad
du
Auiaq
rauou
in
caas o
uiat
aiuut
=
l/%
LomR.
RHS
Rot
Hiam
Squau)Voltbge
=
Aublues
hu
MML
Suu
to
tu
Juad
an
th
anuam
tsuanLAMaA
msantimeous
Vadua
l
AL'su
tu
imd. as
MAuiuant
DC
auuit.
t
malanameous
ualus.
=
m2
pf3
pf4
pf5

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Alteumatinp uwunl

Cuunt_that chamgs diustton usith tims.Vauius lks aiue pnelion t

A LA^ eumt^ 'AC^ De(Duuet^ Cuuuwt).^ Luuut^ UA^ A 0mly duuton^ m^ DO.^ tletius^ law^ in^ ludh^ diutous^ Hiekkaluy ltntimg Cuuut ( CuwmF Qst ususeut AC (^) - Mamluol umams Lon tau

Aan lu^ atpuud^ jin^ Jattwue

Magniuds auiA^ oith^ fuma.

Cam m Juu stdultd

An ADmutimsd th poduiuu w JA MOuud^ Aometims^ Magatian^ amd N AC (^) SouML= J^ douu^ ihat^ jA^ Aahall,^ e^ AuAAlying^ Anauialle kaoen, (ushiiuu Wm s Vu ptak valu v By uaiug^ kiuchsds^ Lau^ Vm (^) Vn sin^ lt>Em^ timlee^ m=^

vm/R

huno u^ uunn^ also^ vausKL^ Ain.=i=imaiulo tt

(n tt)

oltag amd^ wt^ L^

mhaAL uth^ ad^ du Auiaq rauou^ in^ caas^ o^ uiat^ aiuut =^ l/%^ LomR. RHS Rot^ Hiam^ Squau)Voltbge^ =^ Aublues^ hu MML^ Suu^ to^ tu^ Juad^ an

thanuam^

tsuanLAMaA msantimeous^ Vadua l AL'su tu imd. as MAuiuant DC auuit.

malanameous ualus. = m2 t

Rpestatiou

haAoH.agaam= Rrtatotat o Voltag-wunt ulationai in Aciuwits.

haasns Jutusphass ulattouauib Jitoun unltagu amdcuuut in ac Cit Phase s a uoctou Aababl d ustatig alout tka. oauign uwith 'w'. Veutieal CwmbomaMt dnusoidalliy aLaing qastiy. vestp mgth Magulmds puak bhaN AMgl Jutu tu suolta bmd tNa w s se Snj Sndusdu AC cinouit = AC ciuouit usith am induetot.Ruuy ihdustie usista nduco=0=0 v= Vm in Wt s i=im aiUt-T ); dn =Von 9noluotina suasamet tu kuuby am inductine cbil tat uwiuta thu ohang. in ualtbniang umwnt LAC) Thuough. it omd is Aumilan o tu ehhsaition to dius sukaut (Dc) in a. uatayee.SIFDhn Voltaq and. owunt auu out of shant by T/2: Cuont lags Veltágu Juy TT/2 DnL-quat '/4)oyel. uung ciuumt "oni a complut uele is sLs. w dueiine RLactauer

9nstomimous sou ubslid thu uinductoè inokemtavrt= in Vonsin 20t).

2 labacitiue AC uiueuit > v= Vm Abr Wt; i in dinottE) ; tn =V J/wc = Cakuneitiu astane , Hsistaneu olled puuy cabasitine Acrt Yotag and. Cuwwunt au out ef bhass y t2.Qustuut is ahuad ef vdtagu by uwnag Cuvunt ou^ a^ sompleti tititcyeke ito. Av voitqye euw a^ dmplitë syste usO. 2 Suws LCR giuot = L= Sduetou C=Cabautt R= Riso umnLstud n Awis. V= Luli + R+ a SunlWE+ wwww dnVin z z=msldyet lcueuil z +(Xe-X S t= kun S tn= Xc - Xu /R5 Xc> X, itw linut ia pudoninatly cakaithiue Cuwut in ttu ciuout lads tta Aaueualtag ; Au XcXt, ) is -e ciuit s dmuinatly induan luwuut i ttg. cisicut Jaqs hu Aowu olfi Votha md+^ cdaknFlinult C

CayAatiou d Aui LCR Aouit usumukea thato lomud , dampid oslaloe

Ksoname= Rdunanea is ta mdney ef a Aysbn T uoltati ata. gualit ambitud atAom^ eyuncis han'at^ rs

dnalsoy tan^ Hiahanieal^ x^ hotutal^ quantitis

lctrioal &Astim liuomagutiie eMUA

Mohaninal tuuy Muhamieal muuU ELK+Lm 2

dudae L

RApuDeal capacitm Yc Chang uxnt i= day dt LC (^) sulatious uu^ Mot^ HAaliutie^ Kssäme^ q^ ti^

induatou iniaduces^ a

Aambing t^ k^ tu^ MmillatiomA^ dis^ auay.^

otal (^) emlg ed AAtEm qU

Mass M

Foua cusint R

OABlaeumut

Velbitiy v: daldt

TuanalgumU= A^ duuns^ that^ ahamgus^ Adtag^ uwm^ onu^ Aaluu^

T anothun.

Ateb-aanalumus useuR^ on^ dhu^ lineipl^ QEM^ Suduolou)^

Mtial duduiiom..

CongtuustivM: Puimauyl^ uput^ coil^ usth^ Np^ tesuo^ j^ ueoudasy^ col:utput^ cail^

witk

Puluutty nsulaid^ m^ eaihtu^ ie^ nt^ connuutid^ Aumious-^ Puinay uistamiu md aubUut^ au^ mal,^ thu^ Aamm^ Lluoe^ linka^ Jath^ tku^ Jibnas^ tuu

uAsday tALcondauy^ w^ t^ ia^ mall,^ wuking^

AC doum aA0MnLsd t

Kinauycail dhy duils^ is^ cowmetid^ uih^ sAuouda^ l.^ As^ We^ uouide^ AC Cwwt om^ ACuw^ duu^ to^ tkL^ dkange^

in (^) Cus ut- cwwut^ okanges duoiou n^ atiunaumg^ magme^ uoc^ s^ irduead^ in^ puimauy^ oil^

amd tis^ elang

Duoe induns^ sm^ ix^ tuaLLKáauy.^ Qnduad^ um^ JNs^ d^

thon (^) em

A idusud^ in^ punauy^ cil Aalld^ &ack^ em> E-- do.^ dt^ m^ t aais et^ assunustioms^ we^ Aan^ Ay^ at"^ induked^ em^

dt (^) a punay tal

A thu (^) utoltage o@unsA^ gulnasuy Cail andt^ indutd^ ent^ uobndaycoil^ uoltagl^ Se EAVstpis>Yg-NgdO|dt ; p=-vpd |dt *s/%= Ns/NpUS voltage okuiasw

Tku ail is buobDutional To no e Tusus e tu coil. tu Ranaoum iA dasumd

Vp

dt o

lu 1009 nt^ (o^ nuuqy^ lasss)^ ,^ du^ suus^ iubut^

is (^) eual toouUH Ufuut>

a önaoumius=)stepup^ Voltigt^ dveuLaAuVs>VG^ ,Ns>Np,^ ipris t du uavapeumus3Vdtaiu ÁLANUA V,4Vp, NsNp,is>lp Hain PouwON^ Statfousth up_^ (vti)^ huting^ et^ dunD^ Autt^ Lhich,^ ninl&nises^ tu

heuww JaJA^ ong^ disawa^ out^ la)^ Sub^ Au^ Pouur^ Stalou-Atepdou^ (Va^ Aeut^ hg uttiga cuuil^ id^ anot^ asd^ uuue^ iu^ ausuu^ not^ muoh^ saue,^

los sinea (^) dustau Ahout)

bluaious (^) uououmns- usd su (^) uoltage atalul1is in abplianesA Auddaul iah (^) Molta s (^) haAdod. (^) thuug (^) th (^) asblandl (^) u Min (^) gt (^) damagedHemAe (^) blass twhua ualtrge (^) ctialiou (^) umquuudiy NoL (^) e (^) ndgumuus (^) a (^100) le is ut,^ APmL^ amut^ olAmnas^ las dluusia. (^) ays to (^) mlnininL emutäy (^) AeaLs £uoc (^) kakag usu au (^) ain (^) gapa etuntu (^) pumay md (^) Ju (^) puAoudgy ola (^) wkauaL o lih u (^) hana el (^) uot weh (^) ia osAsattd with s (^) Not tu^ puins someliuy (^) uQMalskuad (^) AtMudo eAslng (^) tluueuh ain AOVME (^) lhuuK AAiuq (^) akd2omnimin tuis-tiuoidal (^) atstoum (^) Klame mo (^) Aaa lbitmen uimaud (^) ADADNalauy atl (^) Auoondasuy uod (^) s (^) bucoilacd on (^) ilu. (^) buimasu

Mil mdking Auu. tha thy ou însulatud uom eash ollwt 2a qAss Huduted

2Raistans of (^) utiudinga- the^ wius (^) usd dn (^) Aoil (^) bauoluJalt has (^) sonm (^) uwtaut Amd (^) duu (^) uis (^) uuanee_ Aomu (^) huut iålast (^) eny losso miuimisn (^) this = (^) hieh ui Ad. Jn^ iu (^) unduags (^) uimaH and (^) AuuDndaii (^) aous---Ausisanes ia

lashuat

  1. (^) tddy AuuutA (^3) Solt ium A0u (^) daulohs (^) sddy (^) auuAutA (^) >Asut delobA= mat* oAMa->o (^) mumuy (^) laminala 0Ds (^) au uAd (^) n (^) udues huatg (^) fs due o (^) vddy ar AHusuALA (^) Sel iuom ao (^) uutt (^) fim quts (^) MaquiAnd alse (^) is (^) eoekddd to (^) clangg i (^) tluo using dw^ uoukA (^) maqnstaton tu (^) heet (^) tnuuayL is (^) ahuon (^) by the (^) hsTaHaiA loop