Tolong bantuan nya...

Diketahui:
Efisiensi = 75%
Vs = 40 V
Ip = 1 A
Is = 3 A
Vp = ... ?

Penyelesaian:
Ps/Pp × 100%
75% = Vs.Is/Vp.Ip × 100%
75% = (40 × 3)/(Vp) × 100%
75% = 120/Vp × 100%
75/100 × 100/100 = 120/Vp
75/100 = 120/Vp
3/4 = 120/Vp
3Vp = 480
Vp = 160 V