tes energi dan daya listrik
Quiz
•
Physics
•
12th Grade
•
Practice Problem
•
Hard
Yulianti Yulianti
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
1. Lamu pijar yang dayanya 60 watt menyala selama 1 jam. Berapakah energi yang digunakan oleh lampu tersebut?
60 Joule
600 Joule
21600 Joule
216000 Joule
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebuah setrika listrik dipasang pada tegangan 220 V dan kuat arus 2 A. Berapa energi yang diperlukan selama satu jam?
440 J
4400 J
1584000 J
15840000 J
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pada sebuah lampu pijar bertuliskan 220 V/100 W. Jika lampu dipasang pada beda tegangan 220 volt selama sepuluh sekon. Tentukan energi listrik yang digunakan oleh lampu!
1000 J
100 J
220 J
2200 J
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pemanas air digunakan untuk memanaskan air dari suhu 20°C hingga 100°C selama 8 menit. Jika massa air 300 gram dan kalor jenis air 4.200 J/kg°C, daya pemanas tersebut adalah ….
.
190 W
210 W
240 W
250 W
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Setrika listrik terbuat dari baja dengan massa 0,8 kg dan kalor jenis 450 J/kg°C. Jika daya setrika 300 watt, waktu yang diperlukan untuk menaikkan suhu setrika dari 25°C menjadi 100°C adalah ….
120 s
90 s
75 s
60 s
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
6. Perhatikan tabel alat-alat listrik berikutDaya listrik solder, TV dan kipas angin sesuai tabel adalahNo.
Alat Listrik
R (Ω)
t (jam)
I (A)
1
Solder
15
2
2,0
2
TV
2
8
5,0
3
Kipas angin
5
10
3,0
30 watt, 10 watt, dan 15 watt
60 watt, 80 watt, dan 150 watt
60 watt, 50 watt, dan 45 watt
120 watt, 400 watt, dan 450 watt
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Alat listrik memiliki spesifikasi 25W-220V. Bila alat listrik tersebut digunakan dengan tegangan listrik yang sesuai selama setengah jam, energi listrik yang diubah menjadi kalor sebesar?
450 J
4500 J
45000 J
450000 J
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