Electrostatics
v
Electro static
electron rest
charge
like charges repel eachother
v
recharge
re charge
y y and unlike charges attracteach
other
0
Properties of charges
i Quantization of charge Q neg e 1.6 1019C
alwaysintegralmultiple of chargeof anelectron
electroniccharge
Greet Alzebric sum of all thecharges
Additivity ofcharts p of the system
i
greet a 92 93
93
Ciii Conservation ofcharge Total charge of an isolated system is always
conserved
charging of Bodies
i charging
by Rubbing friction
E.EE zEii
neFIEE
charging by touching
e
g
t t 9
Q
I
GLEETS
f
Msftalme
8 9
f f It becomes
charged
rely
Ciii chargingbyInduction
a a
, i
iI 1
ii i
Inducedcharges
on metalsphill
iv charging by Earthing't
q
NOTE
i'Efim
metal
sphere
Gold leaf Electroscope
II
Before removing Glassrod we
must disconnect it fromearth
I Metalrod
1 1
It is simpledevice
to measure compare Glass
charge of two objects Box
Hf t
11 divergence
angle
Goldleaves
Coulomb's law
F e h F F X 9,92 F 9h42
8 pongzgrinder
oh 92 are F 9192 199192
r r
pointcharges
k 1 9 109 M m2
41TG CZ
fo permittivity of facespace vacuum
Eo 8.854 10 12 CZ
M m2
NOTE i 9 92
Coulomb'S
law will not be
a 1cm A KM applicable
or 7 only if a size of charges
Say
, red on 1 face s
ays along the ne g g
the
charges
of
F away
towards
F F
CID when these charges are kept in some other medium then permittivity
will get modified as
C fo Ek or GK
dielectric
relative const
Then Met force acting on 9 or 92 pesmistinity
will be resultantof all the forcesacting
Theforce of interaction
Freet 9,92 between a Az will not
u er I change
FTZ L a q
41TCo r2
iv
a
93
FB
a
Fr
Emet EL t Efg Fly
f n
i
0
0 Fµ Az
94
v vectorform of Coulomb's law
fattedaffair
7 an
ai ai
a
Fz
a B
d
on 9 by42 On 92 by 9 witnsign
on 92 ff
FzT 9,921979T
letz ST13
FTL FI
F n
r goon FF nF
Goo
eg A Q A If Fris find Metforce
F 1600 actingon
I 22 charge kept at point A
68 4116 v in both cases
A a a F or
c B C
B 09
a
a g 9
a
, l hes
f r r'T n F Q2
3838 41TCoar ka
a
2FCos38 FB eg 8 8
i Fores Find
5382 I a Metforce
on acting
41TEoa2 a to 9 a any charge
nu
fresco kept at corner
qft b Find Mature
a Fires R F F Do 4cg Mag of fifth
Ez 9 a
chargeto beplace
1 E F at centre such
2412 52 2
that all fivecharges all
F KI in Egm
b KO E Feels F AZ
z y
F Kd z k 22
K
i
to Fz
2KaqE try GF
vF
9 29 12 52 nature re
eg
p Find Nature Magnitude of Third
ill e o d charge tobe placed such that all three
tEqiiuuci
48 99 charges are in Egm Also find Position
e
K
se
Ld D
s of Thirdcharge to be Placed
Balancing forces at 9
K 992,49 3 ad 2n 3k
1449249 Zz d D x 21
5
Balancing forces on tag
K 4G 90 E 98 a 9 31
dz KHL D
edgy Maine g ne
D p
Y d
q g g I Repeat Psev Problem
e s
Balancing forces on ta
Kol 4G KE 98 2 29
K2 deep In d ze
Balancingforces on 46
x Kla K 49K9g
d 2 D2
0 023 qq
v
Electro static
electron rest
charge
like charges repel eachother
v
recharge
re charge
y y and unlike charges attracteach
other
0
Properties of charges
i Quantization of charge Q neg e 1.6 1019C
alwaysintegralmultiple of chargeof anelectron
electroniccharge
Greet Alzebric sum of all thecharges
Additivity ofcharts p of the system
i
greet a 92 93
93
Ciii Conservation ofcharge Total charge of an isolated system is always
conserved
charging of Bodies
i charging
by Rubbing friction
E.EE zEii
neFIEE
charging by touching
e
g
t t 9
Q
I
GLEETS
f
Msftalme
8 9
f f It becomes
charged
rely
Ciii chargingbyInduction
a a
, i
iI 1
ii i
Inducedcharges
on metalsphill
iv charging by Earthing't
q
NOTE
i'Efim
metal
sphere
Gold leaf Electroscope
II
Before removing Glassrod we
must disconnect it fromearth
I Metalrod
1 1
It is simpledevice
to measure compare Glass
charge of two objects Box
Hf t
11 divergence
angle
Goldleaves
Coulomb's law
F e h F F X 9,92 F 9h42
8 pongzgrinder
oh 92 are F 9192 199192
r r
pointcharges
k 1 9 109 M m2
41TG CZ
fo permittivity of facespace vacuum
Eo 8.854 10 12 CZ
M m2
NOTE i 9 92
Coulomb'S
law will not be
a 1cm A KM applicable
or 7 only if a size of charges
Say
, red on 1 face s
ays along the ne g g
the
charges
of
F away
towards
F F
CID when these charges are kept in some other medium then permittivity
will get modified as
C fo Ek or GK
dielectric
relative const
Then Met force acting on 9 or 92 pesmistinity
will be resultantof all the forcesacting
Theforce of interaction
Freet 9,92 between a Az will not
u er I change
FTZ L a q
41TCo r2
iv
a
93
FB
a
Fr
Emet EL t Efg Fly
f n
i
0
0 Fµ Az
94
v vectorform of Coulomb's law
fattedaffair
7 an
ai ai
a
Fz
a B
d
on 9 by42 On 92 by 9 witnsign
on 92 ff
FzT 9,921979T
letz ST13
FTL FI
F n
r goon FF nF
Goo
eg A Q A If Fris find Metforce
F 1600 actingon
I 22 charge kept at point A
68 4116 v in both cases
A a a F or
c B C
B 09
a
a g 9
a
, l hes
f r r'T n F Q2
3838 41TCoar ka
a
2FCos38 FB eg 8 8
i Fores Find
5382 I a Metforce
on acting
41TEoa2 a to 9 a any charge
nu
fresco kept at corner
qft b Find Mature
a Fires R F F Do 4cg Mag of fifth
Ez 9 a
chargeto beplace
1 E F at centre such
2412 52 2
that all fivecharges all
F KI in Egm
b KO E Feels F AZ
z y
F Kd z k 22
K
i
to Fz
2KaqE try GF
vF
9 29 12 52 nature re
eg
p Find Nature Magnitude of Third
ill e o d charge tobe placed such that all three
tEqiiuuci
48 99 charges are in Egm Also find Position
e
K
se
Ld D
s of Thirdcharge to be Placed
Balancing forces at 9
K 992,49 3 ad 2n 3k
1449249 Zz d D x 21
5
Balancing forces on tag
K 4G 90 E 98 a 9 31
dz KHL D
edgy Maine g ne
D p
Y d
q g g I Repeat Psev Problem
e s
Balancing forces on ta
Kol 4G KE 98 2 29
K2 deep In d ze
Balancingforces on 46
x Kla K 49K9g
d 2 D2
0 023 qq
