Mudah dan Aktif Belajar Fisika untuk Kelas XII
118
41C07?0B8:4;14640:38A4:8B0:0E0B140CA;8AB8:A4?4B86010148:CB 4=BC:0=00760F006=4B8:F0=6380;08?0B8:4;98:0
?0B8:4;B4A41CB ?B=
1 4;4:B=
5 07 430= 06=4B8:
38 0B0A :0E0B 030;07 :4;C0 1830=6:4B0AA430=6:0=3810E07:0E0B0AC:1830=6
:4B0A 038 007 60F0 38?4;47308:08307B0=60=
:0=0= +=BC:?0B8:4;14C0B0=?A8B85F08BC?B=00760F0
4=34:0B8:0E0B 1
+=BC:?0B8:4;14C0B0==460B85F08BC4;4:B=00760F0 4=90C78:0E0B
3. Gaya Magnetik antara Dua Kawat Sejajar
030 3C0 :0E0B ?4=670=B0 A49090 F0=6 B4?8A07 A490C7 380;88 0CA
;8AB8: 30=
030 ,0 A4007 34=60=
30= ?030 ,0
14;0E0=0= 007 34=60= 4=F0B0 ?030 ,0
:43C0:0E0BA0;8=64=34:0B0B0CB08:4=08:A430=6:0=?030 ,0 :43C0 :0E0B A0;8=6 4=90C7 0B0C B;0:4=;0: =8
4=C=9C::0= 107E0 0=B00 :43C0 :0E0B B81C; 60F0 06=4B8:
Gambar 5.20
Dua buah penghantar lurus sejajar dialiri oleh arus listrik.
a I
1
searah dengan I
2
. b I
1
berlawanan arah dengan I
2
. garis medan
karena I
1
I
2
garis medan karena I
2
P Q
B
1
B
2
F
1
F
2
a garis medan
karena I
2
garis medan karena I
1
I
1
I
2
B
1
B
2
Q P
F
1
F
2
a
1
I
1
Contoh
5.7
4A0=F060F0B810;10;8:0=B00:0E0BA0BC30=:0E0BF0=6;08=30?0B 38BCC=:0=A410608148:CB030,0 0CA;8AB8:
4=81C;:0= 8=3C:A806=4B8:
38B8B8: 0:014A0
030;07
4=670=B0140CA 0:0=38?4=60C78;478=3C:A806=4B8:
A478=660 4=60;0860F006=4B8:
A4AC0834=60=?4A000=
A8= A8=
4;0=9CB=F0?4=670=B0140CA 4=81C;:0=8=3C:A806=4B8:
38B8B8: 4A0=F0
B
B I
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Medan Magnetik
119
4=670=B00CA 0:0=38?4=60C78;478=3C:A806=4B8:
A478=660 4=60;0860F006=4B8:A4AC0834=60=?4A000=
A8=
A8=
08?4A000=?4A000=B4A41CB38?4;4760F0?4A0BC0=?0=90=6 C=BC::43C0?4=670=B0030;07A00;47:04=08BC30?0B38A8?C;:0=
107E0 -
- - - - - +
038 38A41CB A410608
F08BC I
8:0 01,- 9 30?0B 38BC;8A 4=9038
I
C0:0E0BA49090F0=6A0BCA00;08=14900: 2380;880CA;8AB8:A0014A0 8:0 0=B00:43C0=F0B81C;60F0B810;10;8:?4A0BC0=?0=90=6A414A0L
I
78BC=6;07:C0B0CA?0300A8=60A8=6:0E0B 5
8:4B07C8 2
L
I
0F0?4A0BC0=?0=90=6F0=6380;08:43C0:0E0B44=C78?4A000=
-1
038:C0B0CA?0300A8=60A8=6:0E0B030;07
Kata Kunci
• gaya magnetik • kaidah tangan kanan
Contoh
5.8
Tes Kompetensi Subbab
B
0-++,33+2- 41C07:0E0BF0=6?0=90=6=F0 214030B460:;CCA
3830;0430=06=4B8: 8:00?0B5;C:A06=4B8:=F0 B4A;030=0CAF0=64=60;84;0;C8:0E0B
B4=BC:0=60F006=4B8:F0=6380;08:0E0B
4?B=6:0E0B?0=90=6=F030=140AA0 6 0E0B 384=B0=6:0= 78G=B0; 4B=6 430=
06=4B8: F0=69C6078G=B0;30=414=BC: AC3CB HB47030?:0E0B40?0:07:C0B0CAF0=6
4=60;8 30;0 :0E0B C=BC: 4=6810=68 60F0 60D8B0A8
A 41C07 4;4:B=
I
L
I
14640: 38 30;0 AC0BC 430= 06=4B8: A410 A00 34=60=
8=3C:A8 06=4B8: B4A;0 07 640: 4;4:B= 414=BC: AC3CB H B47030? 007 608A 430=
06=4B8: 8:0 4;4:B= 4=60;08 60F0 06=4B8: A414A0
L
I
140?0:07 14A0 :424 ?0B0==F0
41C07?B= I
L
I
14640:34=60= :424?0B0=L
I
A4;0;C8AC0BC430=06=4B8: F0=6A410A0034=60=8=3C:A806=4B8:
30;0007AC1C .?A8B85 8:0?B=14640:?030
1830=6 ,-30=41C0BAC3CB HB47030?AC3CB.
?A8B85B4=BC:0=14A030=00760F006=4B8:F0=6 14:490?030?B=
41C07?B=38B410::0=A4?0=90=6AC1C ,?A8B85
34=60= :424?0B0= L A 40: ?B=
4;8=B0A8430=06=4B8: 4=BC:0=14A0007 60F0F0=614:490?030?B=8BC98:0608A608A60F0
06=4B8:14007:40AC1C ,=460B851AC1C.
?A8B852AC1C -=460B85
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Mudah dan Aktif Belajar Fisika untuk Kelas XII
120
C. Aplikasi Gaya Magnetik
