tolong jawab soal ini,please?

diket :
R1 = 6 ohm
R2 =10 ohm
R3 = 15 ohm
I = 2A
ditanya
V = ...?
jawab
V = I. Rtotal
1/Rp = 1/R2 +1/R3
= 1/10 +1/15
=3/30 +2/30
=5/30
Rp = 30/5 = 6ohm
Rtot = Rs+Rp
=6+6
=12 ohm
V = I.R
= 2.12
=24 V