ini caranya gimanaya ?

Rs = 1 + 2 +3
= 6
Rp = 1/Rs + 1/4
= 1/6+1/4
= 2+3/12
= 5/12
Rp/1=12/5
= 2,4

Rtot = 2,4+5+6
= 13,4 ohm