Bantu jawab mohon 37-40 untuk besok :))

37.)

R1 + R2 + R3
1/2 + 1/3 + 1/6
= 3+2+1 / 6
= 6/6 = 1
Hasilnya ditambah R4. 1 + 1 = 2.

I = ?

V = I x R
60 v = I x 2
I = 60/2
= 30

38.)
Lampu pijar = 6 x 20 x 10 = 1200
TV = 1 x 100 x 10 = 1000
Setrika = 1 x 250 x 2 = 500

1200 + 1000 + 500 = 2700 Wh

karena kWh, dibagi 1000 = 2,7 kWh
2,7 x 30 = 8,1 kWh.

39.) D

40.)
lilitan sekunder (Ls) = 1400
kuat arus primer (Ip) = 7
kuat arus sekunder (Is) = 2

Lp/Ls = Is/Ip
x/1400 = 2/7
7x = 1400 x 2
7x = 2800
x = 400