LISTRIK DINAMIS SMADA JAYA
Quiz
•
Physics
•
12th Grade
•
Practice Problem
•
Easy
SMADA JAYA23
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25 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
Sebuah kawat mempunyai luas penampang 0,3 mm2 dan dialiri arus listrik 4 A selama 2 men it, kecepatan elektron tersebut adalah.... (qe = -1,6 x 10-19 C)
3,40 x 105 m/s
2,78 x 104 m/s
1,78 x 103 m/s
2,78 x 102 m/s
1,88 x 102 m/s
2.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
Voltmeter mempunyai hambatan 1000 Ω dan amperemeter mempunyai hambatan 0, 1 Ω. Keduanya digunakan untuk mengukur suatu hambatan. Pada voltmeter terbaca 0,5 V dan pada amperemeter terbaca 2,5 mA. Nilai hambatan tersebut adalah....
25 Ω
50 Ω
100 Ω
200 Ω
250 Ω
3.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
Kawat tembaga diberi tegangan 9V dan dialiri arus listrik 0,75 A pada suhu 27°C. Kemudian kawat dipanaskan sehingga arus listrik turun menjadi 0,6 A. Berapakah suhu kawat yang dipanaskan tersebut.... (α.besi = 6,51 x 10-3/°C)
28,3°C
33,6°C
39,7°C
44,0°C
58,5°C
4.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
Seutas kawat berdiameter 2 mm dan panjangnya 18 m, dihubungkan dengan sumber tegangan 220 V, kuat arus yang mengalir pada kawat tersebut adalah ... (ρ = 3, 14 x 1o-6 Ω, π= 3, 14)
6,5 A
7,4 A
9,0 A
10,4 A
12,3 A
5.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
Lima hambatan masing-masing besar hambatannya R1 = 3 Ω, R2 = 4 Ω, R3 = 6 Ω, R4 = 3 Ω, dan R5 = 7 Ω disusun seperti gambar di samping. Jika rangkaian di atas disambungkan ke sumber tegangan 220 V, maka daya yang dihasilkan di hambatan R5 adalah....
4 W
3 W
2 W
1 W
nol
6.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
Arus listrik pada suatu kawat berubah sesuai dengan waktu yang dinyatakan dalam persamaan i = 5 + 6t2. Berapakah arus yang membawa muatan dalam selang waktu t = O detik sampai t = 3 detik .... (i = ampere dan t = detik)
23 A
21 A
20 A
25 A
30 A
7.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
Besar hambatan R1 = 10 Ω, dan R2 = 8 Ω, dan besar GGL baterai ε1 = 14 V dan ε2 = 6 V, energi yang dikeluarkan pada hambatan R1 selama 1 menit adalah....
3,84J
38,4 J
384J
48,5 J
485 J
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