Download - LISTRIK MAGNET 2.pdf
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DAFTAR ISI
LISTRIKMEDAN
ELEKTROSTATIKA
GAUSHUKUM
ENERGI POTENSIAL LISTRIK
listrikMultipole
KHUSUHMETODE
ARUS LISTRIK
MAGNETOSTATIKA
INDUKSI ELEKTRO
MAGNET
Exit
BAHAN DIELEKTRIK
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4. Kopasitor dan kapasitansi
Kapasitor adalah
komponen listrik yang
tersusun dari dua
konduktor yang dapat
diberi muatan sama
besar antar konduktor
tapi berlawanan tanda
d
A
V
q 0
V
qC
d
AC 0
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Kapasitor keping sejajar
d
hLC 0
+q
-qE
d
h
L
0L
C
Jika h=d maka disebut
kapasitansi persatuan
panajan
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Energi listrik dan rapat energi
Fungsi kapasitor adalah
menyimpan energi
listrik.
Rapat energi per satuan
volume adalah
C
qqdq
CW
q 2
02
11
EAEdqV 02
1
2
1
2
02
1EW
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BAB V
MULTIPOLE
Persamaan Ekspansi mutipole dari potensial
....)1cos3(24
1cos
4
1
4
1)(
1
22
012
010
N
i
iii
N
i
iii
N
i
i
rq
rrq
rq
rrV
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Dipole
Quadrupole
3
0
2
0 4
.
4
ˆ.)(
r
rp
r
rprvD
zyxj zyxk
jkkj
DQllr
rV
,, ,,
3
0 2
1
4
1)(
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Medan dipole listrik
rr
pEr
ˆcos2
)4
(3
0
ˆsin)
4(
3
0 r
pE
r̂
iar ˆ2
1
θ
+q
-q
P
R
P
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BAB VI
METODE KHUSUS DALAM
PENENTUAN POTENSIALPersamaan laplace dalam satu dimensi
Persamaan laplace dalam dau dimensi
Persamaan laplace dalam tiga dimensi
02
2
x
V
02
2
2
2
y
V
x
V
02
2
2
2
2
2
z
V
y
V
x
V
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BAB VII
ARUS LISTRIK
Arus dan rapat arus
E
Luas A
Vd
Rapat
muatan ρ
+
+
+
Adt
dxI
dt
dqI
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dvA
Ij
adJdt
dq .
s
adJI
.
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Hukum Ohm
Tegangan antar ujung-ujung konduktor sama
dengan hasil kali antara resistansi dan arus
RIV .
A
IJ
A
lR
ElV
EJ Hukum ohm pada
suatu titik
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Daya dan Hukum Ohm
IdtVdW dqVdW
IVdt
dwP
Hukum ohm: V = IR
RdtIdW 2
RIP 2
Jika I dan R konstan
RtIW 2
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BAB VIII
BAHAN DIELEKTRIK
Polarisasi
dV
pdP
EE P = Polarisasi
p = Momen dipole pada elemen
volume
dV = Elemen Volume
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Rapat muatan terikat
s v
bb
R
dv
R
darV
'0
''
4
1)(
Pb
.
nb PnP ˆ.
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Hukum Gauss dalam dielektrik
PED
0
fD
.
)(. iterlingkupf
permukaan
QadD
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