KEMAGNETAN
Quiz
•
Physics
•
9th Grade
•
Practice Problem
•
Easy
Sulistyowati Pancaningsih
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. Daftar beberapa jenis bahan :
(1) Besi (3) Nikel
(2) Kobalt (4) Emas
Bahan yang ditarik dengan kuat oleh magnet adalah nomor ....
a. 1, 2, dan 3
b. 1 dan 3
c. 2 dan 4
d. 1, 2, 3, dan 4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2. Batang besi akan dibuat menjadi magnet dengan cara seperti gambar di bawah ini.
Kutub-kutub magnet yang terjadi pada batang besi di samping adalah ....
a. A = kutub Utara, B = kutub Utara
b. A = kutub Selatan, B = kutub Selatan
c. A = kutub Utara, B = kutub Selatan
d. A = kutub Selatan, B = kutub Utara
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
3. Daerah pada magnet yang gaya tarik magnetnya terkuat disebut ....
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
4. Sebuah trafo step down terdiri atas kumparan primer dengan 5000 lilitan dan kumparan sekunder 50 lilitan. Jika kumparan primer dihubungkan dengan tegangan sebesar 220 Volt, besar tegangan sekundernya adalah ....
5.
OPEN ENDED QUESTION
3 mins • 1 pt
5. Besi dan baja dapat dibuat menjadi magnet, namun sifat kemagnetan dan pembuatannya berbeda. Jelaskan perbedaan sifat kemagnetan besi dan baja! Mengapa demikian?
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
6. Sebuah kawat penghantar memiliki panjang 10 m, tegak lurus berada dalam sebuah medan magnet yang besarnya 80 Tesla. Jika kuat arus yang mengalir pada kawat sebesar 5 mA, hitunglah besar gaya Lorentz yang ditimbulkan!
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7.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Alat-alat dalam kehidupan sehari-hari yang dibuat berdasarkan gambar di samping
dinamo sepeda
induktor Rumkorff
generator
transformator
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