Page 198 - MUDAH DAN AKTIF BELAJAR FISIKA SMA KELAS X

E. Sumber Arus Searah dari Proses Kimiawi

=30 <C=6:8= ?4@=07 <4;870B 30= <4=64=0; 10B4@08 F0=6 386C=0:0= magnet
?030 90< 38=38=6 0B0C ?030 @038> =30 9C60 <C=6:8= ?4@=07 <4=64=0;
A4:4;><?>: <0AF0@0:0B 38 AC0BC 304@07 B4@?4=28; F0=6 <4=66C=0:0= A4;
5>B>D>;B08: A410608 AC<14@ 0@CA ;8AB@8: C=BC: ?4=4@0=60= )4<C0 8BC kumparan
<4@C?0:0= AC<14@ 0@CA A40@07 komutator
)C<14@ 0@CA A40@07 38A41CB 9C60 AC<14@ B460=60= A40@07 A4101 0@CA 38
B8<1C;:0= >;47 AC<14@ B460=60= 4@8:CB 2>=B>7 AC<14@ AC<14@ 0@CA ;8AB@8:
)C<14@ 4;4:B@><06=4B8: 30?0B <4=670A8;:0= 0@CA ;8AB@8: :0@4=0 arus
6490;0 8=3C:A8 4;4:B@><06=4B8: #8A0;=F0 38=0<> 38?4@;870B:0= ?030 arus
#.$#2
)C<14@ ;8AB@8: B4@<>4;4:B@8: 0@CA ;8AB@8: 30?0B 3870A8;:0= 30@8 454:
B4@<>4;4:B@8: Gambar 8.18
)C<14@ 5>B>;8AB@8: 14@0A0; 30@8 AC0BC ?@>A4A 8A8:0 F0=6 <4=6C107 Dinamo atau generator adalah
contoh dari sumber
4=4@68 2070F0 <4=9038 4=4@68 ;8AB@8: elektromagnetik.
)C<14@ ?84G>4;4:B@8: 3870A8;:0= 30@8 454: ?84G>4;4:B@8: F08BC A850B
1070= F0=6 0?018;0 <4=4@8<0 B4:0=0= 30@8 ;C0@ 30?0B <4=670A8;:0=
0@CA ;8AB@8:

1. Sumber Listrik dari Bahan Kimia
&4=4<C0= AC<14@ 0@CA ;8AB@8: 30@8 1070= :8<80 380E0;8 >;47 8;<CE0=
B0;80 5*(* #-6#/* K 0 <4=4<C:0= 107E0 >B>B >B>B :0B0:
F0=6 AC307 <0B8 <4=F4=B0: 98:0 38A4=BC7 34=60= 3C0 ;>60< F0=6 14@1430
&4@:4<10=60= 14@8:CB=F0 -&33#/%20 !0-4# <4=4<C:0= 10B4@08 4;4<4=
:4@8=6 ?4@B0<0 38 3C=80
)4:0@0=6 AC<14@ 0@CA ;8AB@8: 30@8 1070= :8<80 <4@C?0:0= AC<14@
0@CA ;8AB@8: F0=6 10=F0: 386C=0:0= )C<14@ 0@CA ;8AB@8: 30@8 1070= :8<80
381430:0= A410608 14@8:CB
*#+#, .0'+#0 F08BC 4;4<4= F0=6 <4<4@;C:0= ?4@60=B80= 1070=
1070= ?4@40:A8 A4B4;07 <4<1410A:0= A49C<;07 4=4@68 <4;0;C8
@0=6:080= ;C0@=F0 ;4<4= ?@8<4@ 8=8 <4=66C=0:0= 1070= :8<80
F0=6 @40:A8 :8<80=F0 B0: 30?0B 3810;8::0= A478=660 4;4<4= ?@8<4@
70=F0 30?0B 386C=0:0= A0BC :0;8 ?4<0:080= >=B>7=F0 A4; ,>;B0
30= 4;4<4= :4@8=6 10B4@08
*#+#, 1#)3,"#0 F08BC 4;4<4= F0=6 1070= 1070= ?4@40:A8=F0 30?0B
38?4@10@C8 :4<10;8 A4B4;07 B830: 14@5C=6A8 ;068 >=B>7=F0 0:C<C;0B>@
30= 10B4@08 8A8 C;0=6
a. Elemen Primer aliran elektron
;4<4= 8=8 10=F0: <020<=F0 4@8:CB 8=8 1414@0?0 AC<14@ 0@CA ;8AB@8: kutub
F0=6 B4@6>;>=6 A410608 4;4<4= ?@8<4@
-&.&/ !0-4#
;4<4= ,>;B0 38B4<C:0= >;47 -&33#/%20 !0-4# !0-4# <4=4<C:0= Cu Zn
107E0 14@10608 ;>60< 30= ;0@CB0= 0A0< 0B0C 60@0< 30?0B 386C=0:0=
A410608 4;4<4= A434@70=0 :0= B4B0?8 180A0=F0 F0=6 386C=0:0= 80;07
;4<?4=6 A4=6 /= F0=6 3824;C?:0= :4 30;0< ;0@CB0= 0A0< AC;50B Larutan
asam
#.$#2 <4=C=9C::0= 4;4<4= ,>;B0 sulfat
&@>A4A :8<80 F0=6 B4@9038 ?030 4;4<4= ,>;B0 30?0B 3894;0A:0= 34=60= encer
?4@A0<00= :8<80 14@8:CB
Gambar 8.19
K

)% )% Elemen Volta

Listrik Dinamis 189