
IPA 9_AMI BAG2
Authored by Suyarmi Emi
Science
3rd Grade
Used 7+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Motor listrik merupakan salah satu penerapan dari gaya Lorentz. Peralatan berikut ini yang tidak menggunakan motor listrik sebagai komponen utama adalah….
televisi
kipas angin
blender
air conditioner
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebuah kawat lurus 30 cm yang dipasang saling tegak lurus dengan arah medan magnetik 4 tesla mengalami gaya Lorentz sebesar 6 newton. Kuat arus yang melalui kawat tersebut adalah….
5 A
7,2 A
50 A
72 A
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebuah kawat panjangnya 20 cm terletak dalam medan magnet homogen 0,5 tesla. Bila pada kawat tersebut diberi kuat arus 3 ampere dan arah arus listrik tegak lurus dengan arah medan magnet, maka gaya yang dialami oleh kawat adalah….
0,1 N
0,2 N
0,3 N
0,4 N
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Transformator mengubah tegangan 50 volt menjadi 200 volt, Jumlah lilitan sekunder transformator tersebut adalah 1.000 lilitan. Jumlah lilitan primer yang benar adalah….
100 lilitan
150 lilitan
200 lilitan
250 lilitan
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebuah transformator mengubah tegangan 20 V menjadi 25 V. Bila jumlah lilitan primer adalah 120 lilitan, maka jenis transformator dan jumlah lilitan sekunder yang tepat adalah….
Step Up, 150 lilitan
step Down, 150 lilitan
Step Up, 300 liiltan
Step Down, 300 lilitan
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Daya primer dan sekunder transformator tersebut adalah 30 watt dan 24 watt. Efisiensi tansformator tersebut adalah….
40 %
60 %
75 %
80 %
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Bila lampu menyala normal saat dihubungkan dengan bagian output transformator, maka kuat arus sekunder adalah….
0,5 A
1,0 A
2,0 A
2,5 A
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