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1/Rp= 25/250Ω + 10/250Ω
1/Rp = 35/250Ω
Rp= ( 50/7)Ω
I= V/R
I= 12/(50/7)A
I= 1,68A
4. t= 8*2jam= 16jam
W= P *t
W= 300W*16jam
W= 4800W jam
1/Rp = 5/50 + 2/50
1/Rp = 7/50
Rp = 7,1 ohm
Rtot = 15 + 7,1
Rtot = 22,1 ohm
I tot = V / Rtot
I tot = 12/7,1 = 1,6 Ampere
b. Daya (P) = V x I
P = 12 x 1,6 = 19,2 Watt
4) Setrika = 300 W x 2 jam x 8 = 4800 wh = 4,8 kWh
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