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14. Rangkaian (1)
1/Rp = 1/6 + 1/6 + 1/12
1/Rp = (2 + 2 + 1)/12
1/Rp = 5/12
Rp = 2,4 Ω

I = V/R
I = 12 v / 2,4 Ω
I = 5 A

Rangkaian (2)
1/Rp = 1/12 + 1/12
1/Rp = 2/12
Rp = 6 Ω

I = V/R
I = 12 v / 6 Ω
I = 2 A (A)


15.
W1 = 5 × 15W × 12 h × 30 = 27.000 Wh
W2 = 2 × 30 W × 5 h × 30 = 9.000 Wh
W3 = 1 × 360 W × 30 h = 10.800 Wh
W4 = 1 × 200 W × 3 h × 30 = 18.000 Wh
W5 = 2 × 120 W × 4 h × 30 = 28.800 Wh

W1 + W2 + W3 + W4 + W5 = 93.600 Wh

= 93,6 kWh × Rp. 1.300/kWh
= Rp. 121.680 (B)