
mid semester2 kls 9
Authored by Ciska Oktafia
Science
9th Grade
Used 7+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
jarum kompas menunjuk ke arah U, berarti jarum kompas menuju ke arah ...
kutub selatan bumi
kutub utara bumi
pusat bumi
khatulistiwa
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Berikut manfaat medan magnet dalam migrasi hewan - hewan yang ada di Bumi, kecuali ...
migrasi salmon
gerak kelelawar
migrasi paus
bakteri Magnetotactic bacteria
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
kawat berarus listrik berada dalam medan magnet 40 tesla mengalami gaya lorentz 10 N. jika kawat tersebut berada dalam medan magnet 20tesla, maka besar gaya Lorentz yang dialami kawat adalah ... N
3
5
10
20
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
sebuah penghantar sepanjang 60 cm membawa arus sebesar 5A dalam suatu medan magnet seragam. Diketahui kuat medan magnet sebesar 3 T. besar gaya lorentz yang bekerja pada penghantar tersebut adalah ...
8 N
9 N
10 N
11 N
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
berikut contoh benda feromagnetik adalah ...
baja
tembaga
wolfram
aluminium
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Untuk menyalakan lampu 24 volt dengan tegangan listrik dari PLN 220 volt, digunakan transformator step - down. Jika jumlah lilitan primer transformator 1.100 lilitan, maka jumlah lilitan pada kumparan sekundernya adalah ... lilitan
60
120
240
480
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
sebuah trafo memiliki efisiensi 80 %. Tegangan inputnya 220 V dan tegangan outputnya 110 V. jika kuat arus primer yang mengalir 1,5 A, maka kuat arus sekundernya adalah ... A
1,5
2,4
3,0
3,2
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