
MEDAN MAGNET
Presentation
•
Physics
•
12th Grade
•
Practice Problem
•
Hard
Syarifah Suniati
FREE Resource
9 Slides • 0 Questions
1
MEDAN MAGNET
KELAS 12
SYARIFAH SUNIATI
2
MEDAN MAGNET
3
MEDAN MAGNET
• Di dekat kawat lurus berarus
• Di pusat kawat melingkar berarus
• Di tengah dan ujung solenoida
• Di toroida
4
KAIDAH TANGAN KANAN
UNTUK KAWAT LURUS
IBU JARI
= arah I (arus listrik)
EMPAT JARI
= arah B (medan magnet)
TELAPAK TANGAN = arah F (gaya magnet)
5
UNTUK KAWAT MELINGKAR
IBU JARI
= arah B (medan magnet)
EMPAT JARI
= arah I (arus listrik)
B
I
6
GAYA MAGNET
Pada Kawat Ber-Arus Pada Medan Magnet
FL = B i L sin θ
FL = gaya Lorentz
i = kuat arus listrik
L = panjang kawat
B = kuat medan magnet
θ = sudut antara arus listrik & medan magnet
7
GAYA MAGNET
Pada Muatan Yg Bergerak Dalam Medan Magnet
FL = B q v sin θ
FL = gaya Lorentz
q = muatan listrik
v = kecepatan gerak muatan
θ = sudut antara kecepatan & medan magnet
U
S
U
S
Note : utk muatan negatif, arah gaya Lorentz berlawanan arah dengan arah gaya
yang diperoleh dengan menggunakan kaidah tangan kanan.
8
BENTUK LINTASAN PARTIKEL
Tergantung pada SUDUT antara v & B
1. Garis Lurus, v sejajar B (searah/berlawanan)
2. Lingkaran, v tegak lurus B
dengan jari-jari lingkaran R dirumuskan
3. Helix (spiral), v tidak sejajar & tidak tegak lurus B
m = massa partikel (Kg)
q = muatan partikel (C)
v = kecepatan partikel (m/s)
B = kuat medan magnet (T)
9
GAYA MAGNET
Pada dua kawat lurus berarus sejajar
F
F
F
F
a
a
MEDAN MAGNET
KELAS 12
SYARIFAH SUNIATI
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