R1 = 45 ohm
R2 = 9 ohm
R3 = 15 ohm
I1 = 0,4 A
a. beda potensial pada ujung hambatan.
Karena hambatan dihubungkan paralel maka beda potensial diujung hambatannya sama.
Vp = I1.R1
Vp = 0,4 . 45 = 18 v
b.
I2 = Vp/R2 = 18/9 = 2 A
I3 = Vp/R3 = 18/15 = 1,2 A
c. Tegangan baterai V sama dgn tegangan di ujung-ujung hambatan paralel
V = Vp = 18 v
d. Kuat arus yg dihasilkan baterai.
I = I1 + I2 + I3
I = 0,4 + 2 + 1,2
I = 3,6 A
Cara lain
1/Rp = 1/45+1/9+1/15
1/Rp = 9/45
Rp = 45/9 = 5 ohm
I = V/Rp = 18/5 = 3,6 A
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R1 = 45 ohm
R2 = 9 ohm
R3 = 15 ohm
I1 = 0,4 A
a. beda potensial pada ujung hambatan.
Karena hambatan dihubungkan paralel maka beda potensial diujung hambatannya sama.
Vp = I1.R1
Vp = 0,4 . 45 = 18 v
b.
I2 = Vp/R2 = 18/9 = 2 A
I3 = Vp/R3 = 18/15 = 1,2 A
c. Tegangan baterai V sama dgn tegangan di ujung-ujung hambatan paralel
V = Vp = 18 v
d. Kuat arus yg dihasilkan baterai.
I = I1 + I2 + I3
I = 0,4 + 2 + 1,2
I = 3,6 A
Cara lain
1/Rp = 1/45+1/9+1/15
1/Rp = 9/45
Rp = 45/9 = 5 ohm
I = V/Rp = 18/5 = 3,6 A