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Latihan Soal Arus Listrik dan Tegangan Listrik Agustus 10, 2012

Posted by cafestudi061 in Latihan Soal.
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1. Arus listrik 500 mA, waktu 1 jam. Tentukan besar muatan listriknya
2. Muatan listrik 4500 C, arus listrik 1500 mA. Hitunglah waktunya
3. Waktu 30 menit, muatan 5400 C. Tentukan besar Arus listriknya
4. Energy 12.500 J, muatan 250 C. Hitunglah besar tegangan listriknya
5. Muatan 35 C, tegangan 7000 mV. Berapa besar Energinya
6. Tegangan 0.5 kV, energy 25kJ. Hitunglah muatannya
Penyelesaian:
1. Diketahui : I = 500 mA = 0.5 A
t = 1 jam = 60 x 60 = 3600 s = 3600 dt
Ditanyakan : Q = ?
Jawab :
Q = I x t
= 0.5 A x 3600 s
= 1800 A.s
= 1800 Coulomb
2. Diketahui : Q = 4500 C
I = 1500 mA = 1.5 A
Ditanyakan : t = ?
Jawab :
t = Q / I
= 4500 C / 1.5 A
= 3000 s = 3000 dt
= 50 menit = 5/6 jam
3. Diketahui : t = 30 menit = 30 x 60 dt = 1800 dt = 1800 s
Q = 5400 C
Ditanyakan : I = ?
Jawab :
I = Q / t
= 5400 C / 1800 s
= 3 Ampere
4. Diketahui : W = 12.500 J
Q = 250 C
Ditanyakan : V = ?
Jawab :
V = W / Q
= 12.500 J / 250 C
= 50 Volt
5. Diketahui : Q = 35 C
V = 7000 mV = 7 V
Ditanyakan : W = ?
Jawab :
W = V. Q
= 7 V x 35 C
= 245 V.C
= 245 Joule
6. Diketahui : V = 0.5 kV = 500 V
W = 25 kJ = 25000 J
Ditanyakan : Q = ?
Jawab :
Q = W / V
= 25000 J / 500 V
= 50 Coulomb

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