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Arus Bolak Balik - e-Learning Sekolah Menengah Kejuruan

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V = V R + J (V L - V C ) ..................................................................(2.2)<br />

V<br />

2<br />

2<br />

? VR ? (VL<br />

? VC<br />

) .………………………………………………………...(2.3)<br />

? menyatakan beda fase antara V dengan I atau dengan V R<br />

VL V<br />

Tg? ?<br />

? ……………………………………………………………………...(2.4)<br />

R<br />

VL ? VC<br />

?1<br />

VL<br />

? VC<br />

? ? arc.tg ? tg …………………………………………...(2.5)<br />

R R<br />

Dari,<br />

V R = I R<br />

V L = I X L<br />

V C = I X C<br />

V = V R + J (V L – V C ).........……..……………………………………………...(2.6)<br />

V = I R + J I (X L – X C ) ..………..……………………………………………...(2.7)<br />

V<br />

I<br />

? R ? (X X ) .………………..……………………………………………...(2.8)<br />

L<br />

?<br />

C<br />

Menurut hukum Ohm<br />

I<br />

V merupakan hambatan berarti:<br />

R + J (X L – X C ) = hambatan pada rangkaian RLC dan disebut impedansi<br />

yang dilambangkan dengan huruf (Z) Impedansi,<br />

Z = R + J (X L - X C )......................................................................(2.9)<br />

j<br />

X = (X L -X C )<br />

X = R + jx = R j (X L -X C )<br />

?<br />

R<br />

X C<br />

Gambar 13: Diagram Impedansi<br />

Z<br />

2 2 2<br />

2<br />

? R ? X ? R ? (X<br />

L<br />

? X<br />

C)<br />

…………………………..……………...(2.10)<br />

Modul.FIS.22 Arus Bolak-Balik 22

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