
Prestest 3 Gaya Lorentz kelas 9
Quiz
•
Physics
•
9th Grade
•
Easy
Nur Rahmi
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8 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Berikut adalah cara membuat magnet... (PILIH 3)
Digosok
Diinduksi
Dikonduksi
Direduksi
Dialiri arus DC
2.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Jenis-jenis magnet adalah... (PILIH 3)
Ferromagnetik
Parimagnetik
Ferrimagnetik
Paramagnetik
Diamagnetik
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pada gambar di atas, kutub P adalah kutub...
Selatan
Positif
Utara
Negatif
4.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Berikut ini cara memperbesar medan magnetik pada elektromagnetik adalah... (PILIH 3)
Memperbesar arus listrik
Memperbanyak lilitan kumparan
Menyimpan inti besi di dalam kumparan
Memperbesar hambatan listrik
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Faktor-faktor yang berpengaruh terhadap besar gaya lorentz adalah... (PILIH 3)
Kuat medan magnet
Kuat arus listrik
Jenis kawat
Panjang kawat
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hubungan matematis gaya loretz adalah...
F = B . I . L
F = V . I . L
F = B . Q . L
F = B . Q . R
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kawat lurus sepanjang 5 m dilalui arus 2 A dengan medan magnet 20 T. Besar gaya lorentz yang timbul adalah...
200 N
500 N
20 N
50 N
8.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Gaya lorentz pada sebuah kawat penghantar adalah 30 N. Jika panjang kawat 2 m dan medan magnetnya 5 T, maka besar kuat arus yang mengalir pada kawat tersebut adalah...
6 A
60 A
3 A
30 A
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