Induksi Elektromagnetik
157
9. R, L, dan C Dipasang Seri dalam Rangkaian Arus Bolak-Balik
39=3;33CFD;DEC;=4A3=43;=J39?7?;;=;:3?43E3?FC; 6;B3D39D7C;6793;6F=EACD7CE3=3B3D;EAC3=3?79:3D;=3
E3?43:377C9;;DEC;=J3974;:47D3CE7E3B;C39=3;3D7C;;; :3J363B3E6;9F3=3FEF=?7?B7C47D3C63J3;DEC;=J39E7C43E3D
CFD?3=D;?F?633?C39=3;3?7?;;=;;3;6383D7J39D3?3B363 D7E;3B=A?BA774;:73D63B3E63B7C:3E;=33
;=3 63 E7E3B=3 B7CD3?33 3CFD 633? C39=3;3 D747D3C D;
+
B7CD3?33D7E;3BE793936793?7?7C:3E;=36;39C3? 83DACB3633
J3;EF
?
D;
+?7?;;=;83D7J39D3?367933CFD
?
D; +
?763:FF;83D7D747D3C C36
?
D; +
E7CE;99383D7D747D3C C36
7C:3E;=3C39=3;3D7C;B3633
+7E;3B=A?BA7 ?7?;;=;E79393
63 +753C383DACE79393E79393;;
63B3E6;F?3:=3D74393;47C;=FE N
7:=3C73
63
D3;9E793=FCFD:3C9363B3E6; E7EF=36793?799F3=3:;EF9G7=EACJ3;EF
N 6793?7?7C:3E;=3=7?43;3
:3?43E3EAE3C39=3;3
D7C;NNJ396;D74FE6793;?B763D;C39=3;3.63B3E6;:;EF9 63C;3409
N3 3E3F
N4 7:=3C733CFD?3=D;?F?J39?793;C6;D7E;3B=A?BA7D3?3
47D3CJ3:F4F933E3C3E79393?3=D;?F?633CFD?3=D;?F?;; ?7?7F:;B7CD3?332J3;EF
N 7E7C393
E79393?3=D;?F? ;?B763D;C39=3;3
N C73=E3D;EAE3
Gambar 6.33
Resonansi rangkaian R–L–C seri
Gambar 6.35
Diagram fasor Z, R, X
L
, dan X
C
.
Gambar 6.34
Diagram fasor V, V
R
, V
L
, dan V
C
.
Z X
L
– X
C
X
L
R X
C
R L
C
v I = I
m
sin t
i
L
V
–
C
V
L
V
V
R
V
C
V
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Mudah dan Aktif Belajar Fisika untuk Kelas XII
158
R = 30 X
L
= 40 I
V
L
V
R
V = V
m
sin t
76383D73E3C3E7939363=F3E3CFD63B3E6;E7EF=3D74393; 47C;=FE
E3 N
D7:;993B7CD3?33E79393J33633: D;
+ B34;3
DF6FE83D7 47C;3;BAD;E;8CE;J3E79393 ?763:FF;3CFD63C39=3;347CD;83E;6F=E;8;=3
DF6FE83D7 47C;3;793E;8CE;J3E79393E7CE;993A7:3CFD63C39=3;3
47CD;83E=3B3D;E;8;=3 6;B7CA7:
63CE;J3
E79393?7?;;=;83D7D3?3D7639=3C39=3;347CD;83EC7D;DE;833? :3;;6;=3E3=3E73:E7C36;C7DA3D;
10. R dan L Dipasang Seri dalam Rangkaian Arus Bolak-Balik
7C:3E;=33 +7E;3B=A?BA7?7?;;=;E79393
63 +753C383DACE79393E79393;;63B3E6;F?3:=3D74393;
793?799F3=3:;EF93G7=EAC47D3CJ3E79393 EAE3J3;EF
N 7D3CJ3;?B763D;C39=3;3N6;B7CA7:D7B7CE;47C;=FE
N 3E3F
N 76383D73E3C3E7939363=F3E3CFD63B3E6;E7EF=3D74393;
47C;=FE E3
N 7C:3E;=33 E3?B3=43:H3E79393?763:FF;3CFD
D747D3C C36D7:;993;=3 D; +
?3=3 D;
+
a b
R L
I = I
m
sin t
Gambar 6.36
Rangkaian R dan L dipasang seri
Gambar 6.37
Diagram fasor V
L
dan V
R
V
L
V
ab
V
R
I V
Gambar 6.38
Diagram fasor V
L
dan V
R
X
L
Z
R
Gambar 6.39
Grafik tegangan mendahului arus dengan beda fase 0
90°. V
ab
t I
ab
+74F3:C7D;DEAC
6;B3D39D7C;6793;6F=EAC B363E79393
4A3=43;=
. 3 ;EF9;?B763D;C39=3;383D7C39=3;3=F3E3CFD
63 4 ,7EF=383D7
63E7C:363B=F3E3CFD
7
;=7E3:F; C7D;DEAC?FC;
C73=E3D;;6F=EAC E79393DF?47C
.
Contoh
6.16
Vi
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Induksi Elektromagnetik
159 3 ?B763D;6;:;EF9?73F;3409
2
83D7E79393 6;:;EF967933409 E3
M F3E3CFD
.
,79393 .
,79393;6F=EAC. .
4 D783D76793=F3E3CFD
?763:FF;D747D3C C36
M
?763:FF;
M
33?C39=3;3D7C;6;B3D39C7D;DEAC?FC;
63D74F3:;6F=EAC B363E793934A3=43;=6793B7CD3?33
D;
+.,F;D=3B7CD3?33
=F3E3CFD633?C39=3;3E7CD74FE 7
;=7E3:F;
A:? D;
+.?3=3
.
E3 M
C36 36;B7CD3?33=F3E3CFDJ33633:
D; +
D;
+N
Contoh
6.17
11. R dan C Dipasang Seri dalam Rangkaian Arus Bolak-Balik
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