Induksi Elektromagnetik
147
1G1G178917=5:149;1?A
8917
14118
8917
5AB5C1B5
8917
2 1G1G178917:9;1C57171CA1B=9B94919;;1=51D9CA16?=5:149 ;14118
CA1B=9B9
1G1G178917=5:149;1?A
8917
14118
8917
20
0 1495AB5C1B5
8917
;0
,52D18CA1B6?A=1C?ABC5D=5=99;9
99C1141 ;D=1A1A9=5AG141
99C1141;D=1A1
B5;D45AG1D=1A1A9=5A4925A91ADB2?1;219; 25AC57171
1 5A11C57171;D=1A1B5;D45A 2 9;11ADB411=;D=1A1B5;D45A
25A11
1ADBG17=5719A411=;D=1A1A9=5A 3 5A11 41G1 =1BD;1 41 41G1 ;5D1A1
CA1B6?A=1C?A ,52D18CA1B6?A=1C?A498D2D7;14571BD=25A
C57171
41;D1C1ADBG1
-5AG1C1 C57171;5D1A1G1B525B1A41;D1C1ADBG1
9CD7 1 569B95B9CA1B6?A=1C?A
2 5A214971:D=1899C1A9=5A41 B5;D45A
,52D18 CA1B6?A=1C?A G17 491B17 141 A149? =5=99;9 B5B969;1B9 C5A=91 A9=5AG1
498D2D7;14571BD=25A
9;1:D=18 99C1B5;D45ACA1B6?A=1C?AC5AB52DC
99C141
1ADBG17=5719A411=A149?
C5CD;1 1 :D=1899C1A9=5A
2 ;D1C1ADB141;D=1A1A9=5A 3 41G1A9=5A4141G1B5;D45A:9;1569B95B9
CA1B6?A=1C?A
Tes Kompetensi Subbab
B
-00
C. Arus dan Tegangan Listrik Bolak-balik
ADB 41 C57171 9BCA9; 2?1;219; =5=99;9 919 G17 B51D 25AD218D218 C5A8141 F1;CD B531A1 5A9?49; 219; 25B1A =1DD
1A18G15B1A11ADB41C571712?1;219;491=217;14571 5F1B19981=9AB5=D15A11C1AD=18C177149?5A1B9;1
457155A799BCA9;1ADB2?1;219;,55AC941;5C18D95A25411 =541B1A1C1A11ADB2?1;219;411ADBB51A1814118?1A9C1BG1
.CD;=575C18D9?1A9C1B1ADBB51A18G17B51DC5C1411ADB 2?1;219;G17B51D25AD218411C497D1;1?B9?B;?-2
,, 51D9 11C 99 411C :D71 491=1C9 919 6A5;D5B9 41 5AD2181C57171141B5C91B11C411=25CD;7A169;41DDCD;
=57D;DA 919 C57171 565;C96 41 ;D1C 1ADB 9BCA9; 565;C96 411C 497D1;1E?C=5C5A411=5A5=5C5A
1. Sumber Tegangan Bolak-Balik AC
5CD; C57171 1ADB G17 C5A2131 141 =?9C?A ?B9?B;? 25AD218B531A15A9?49;=5DADC6D7B9B9DB,118B1CDBD=25A
G19CD755A1C?A1ADB11=755A1C?A141;D=1A1G17411C 25ADC1A2521B411==541=175C8?=?75
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Mudah dan Aktif Belajar Fisika untuk Kelas XII
148
Gambar 6.18
Pengukuran arus listrik dengan menggunakan volmeter.
1 2
5A81C9;1-
B91B971G175A1;9BCA9;411ADB2?1; 219;4981B9;141A9B52D18;D=1A1G1725ADC1A45711:DC5C1
14171=21A7A169;C5AB52DCD31;41B9=D75?=217=5D:D;;1 ;54D4D;1;D=1A1C5A814125B1ABD4DCG1749C5=D8G1
5B1A 77 G17 4981B9;1 41A9 B52D18 755A1C?A G17 25ADC1A =5=5D895AB1=1125A9;DC
J -
1C1DDCD; -
J -
;1A51
3?B
=1;1
3?B J
-
1C1D
3?B J
- -
J 9;1;9C1CDAD;1-.
3 49411C
B9 -
J C1D411C:D7149CD9B;14571
=1;B
B9 -
J1 1A517794D;B9B1=145712541C57171491C1A14D1;DCD277
94D;B9=1;1411C49CD9B
=1;B
B9 -
J2 5C5A171
,
71G175A1;9BCA9;=1;B9=D=E?C E?C
,
C57171=1;B9=D=E?C 6D;B=175C9;02
:D=1899C1;D=1A1 D1B29417;D=1A1=
25B1AG194D;B9=175C9;- 6A5;D5B9BD4DCDC1A1;D=1A1A14 B
-
9;1 755A1C?A C5AB52DC 498D2D7;1 4571 A17;191 C5ACDCD 1;1=5719A1ADB
2. Alat Ukur Tegangan dan Arus Bolak-Balik
.CD;=575C18D9141G1C571719BCA9;141BD1CDA17;191 B118B1CDG1497D1;1B52D1811CG1749B52DC-,--
;1C5C19C5BC5C941;411C=575C18D925B1AG1C57171G17 =5719A141A17;191C5AB52DC41DDCD;=57D;DA919C57171
41;D1C1ADB497D1;1E?C=5C5A411=5A5=5C5A919 G17C5A213114111CD;DA99=5D:D;;181A71565;C9641A9C57171
41 ;D1C 1ADB 51D9 -
41 411C =5=181=9 81B9 57D;DA11ADB9BCA9;411=B52D18A17;191
Gambar 6.16
Grafik tegangan dan arus listrik bolak-balik terhadap waktu.
1
2
V V
m
V = V
m
sin t T
2T
I I
m
I = I
m
sin t T
2T
bagian atas yang berlogam
bagian tengah yang transparan
lampu logam
Gambar 6.17
Cara pengukuran dengan testpen
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Induksi Elektromagnetik
149
Gambar 6.19
Pengukuran tegangan pada sebuah rangkaian
resistor
voltmeter
1A9571=1C1=51D9?B9?B;?BD=2DE5AC9;1491CDA141C57171
3=
Contoh
6.10
Gambar 6.20
kWh meter yang ada di rumah digunakan untuk mengukur
daya listrik yang terpakai.
141-
C5A=91;DCD2?B9C96498D2D7;14571 1ADB=1;B9=D=
1411=5A5=5C5AC5A21319191ADB
B5417
;1-
C5A=91?B9C96498D2D7;145711ADB=1;B9=1 C5AG1C1C5A21319191ADB57D;DA199=5D:D;;1218F1
17;1G17C5A213114111CD;DA14118919565;C96G15=9;91 D1411==57D;DAC57171B52D18A17;191B55AC9-
5C9;11ADB=5719A:1AD=5D:D;E?C=5C5A=D1925AD218919 G17C5A2131=5D:D;;181A71565;C96C57171A17;1919BCA9;41
411C:D71=57D;DA;D1C1ADBC571714181=21C19BCA9;219; 1ADB =1DD 1ADB 4571 =577D1;1 =DC9=5C5A
=5A5=5C5A?C=5C5A418==5C5A41?B9?B;?
3. Nilai Efektif Tegangan dan Kuat Arus AC
