Jawabanmu

2014-01-27T13:13:15+07:00
Np = 1
Ns = 5
V = 30 v
Ip = 450
Is.....?

Np/Ns = Is/Ip
1/5 = Is/450
5.Is = 450.1
5.Is = 450
Is = 450/5
Is = 90