magnet
Quiz
•
Science
•
3rd Grade
•
Practice Problem
•
Medium
LUH ARJANI
Used 2+ times
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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pernyataan yang tepat terkait migrasi pada burung nokturnal adalah ...
Burung nokturnal memanfaatkan medan magnet bumi untuk bermigrasi saat
gugusan bintang tak terlihat.
Dalam bermigrasi, burung nokturnal memanfaatkan matahari, gugusan bintang
dan medan magnet bumi.
Pemanfaatan medan magnet bumi oleh burung nokturnal berlangsung saat siang
hari.
saat siang hari, burung nokturnal memanfaatkan matahari untuk bermigrasi
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bagian dari magnet yang mempunyai gaya tarik terbesar adalah ….
Tengah
semua bagian
kutub magnet
kutub utara magnet
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah transformator memiliki tegangan primer sebesar 220 V. Apabila diketahui,
kumparan sekundernya 1.000 lilitan dan kumparan primernya 200 lilitan, maka
tegangan sekunder transformator tersebut sebesar .
1200
2200
1000
1100
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah kawat tembaga dengan panjang 20 m dialiri arus listrik sebesar 0,5 A. jika
kawat tembaga tegak lurus berada dalam medan magnet sebesar 4 tesla maka gaya
lorentz yang timbul sebesar ....... (F=B.I.L)
40
400
220
24,5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pernyataan berikut ini yang tidak sesuai dengan persamaan pada sebuah trafo adalah
Vp : Vs = Ip : Is
Vp : Vs = Is : Ip
Vp = Vs x Is : Ip
Vs = Vp x Ip : Is
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Transformator yang berfungsi untuk menaikkan tegangan listrik yaitu …
trafo step up
trafo step down
akumolator
reaktor
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah kawat berarus dalam medan magnet mengalami gaya Lorentz sebesar 20 N.
Bila kuat arus diperbesar 2 kali dari semula maka besarnya gaya Lorentz yang dialami
kawat adalah?
20
10
30
40
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