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Neet notes
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Lecture notes of 231 pages for the course NEET at (Neet notes)
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Electromgn tismEletvostatics EM hWoe
Chey
pad)
thctric choye feld
"Elecbvic chonge i- It is the inherent prgpar ty
of tctin material which is the cavse
elctnc n d
magnetic pheromenon
tt is a Salrr vontiby
It is denoted y /Q
"Its SI unit is coolomk (c)
- Tt's Chs vnit s stat
codonb /e sleu drostatic wnit)
(euctrosttic
C3xlo? esu
Electric choge
tve -Ve
(elctran (e
Afaet)
Properties of eectrie chqe
- Like chorges repel and un (ike
eth chojes attract
gUantisatin
be
of chongc Choye On an object
ex pre sSed 1 tne
, which of the following chog
fcasiba
)2:4.g xlo*c = 3.2 x/0
Not Possi ble n20o
Poss ble
Ln an iselatcd system, totol choy is
+9uC
Note objects Aard B tt#t
not iso Lated individuoy
to Einstein, tn as of on
m,
C= 3x1o m/s
V= Velec f ohject
T v is m, rect mas
co mponable to c Cie
chonge), then the Cic for cketric
mas above expvesien uill
Note: Speife change
change
Mos
, OBy friction hen 2 coj
cai crie
thee is possibility of trrm for ef
ano lhy
objet te
By Condvction
ttttt
(ont act
9 By Tndvction
7Indued
cheg
Neutvl
Conduct
Note - AA chenged object mat Can attract
rttod cond vcting clbject
Coulombs Lacw
L
Thr is force of atraction /Repulsien
be t ween two foint chogcs
12
Here F is e ucirostatic
foru whis
, ven b
whu form
K is
which
propor tionaliby constonst
2
dspunds On medium in which
Point paed
chogs
K=
E’ Permittivity of madivm in which chgs
t,’fermitivitty of air or Va (CUm
E, ’ relative
Con stat permite
of
or dicletriy
in
2 chonges
for o (hez
medim
In Va llum
9
2
C
-12 2
C
In
Vaclum
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