Jawabanmu

2014-01-25T12:40:57+07:00
Np = 100 lilitan , ns= 1000 lilitan
vp = 60 v , vs ? is?

vp / vs = np/ns
60v/vs = 100/1000
60000/100 = vs
600 = vs

untuk is 
ip/is = ns/np
300 watt / is = 1000/100
30000/1000 = is
30 watt = is :)