We have:
V
NN
V
s
s
p
p
=




   and  I
N
N
I
s
p
s
p
= 



(7 36)
That is, if the secondary coil has a greater number of turns than the
primary (Ns > Np), the voltage is stepped up (Vs > Vp) This type of
arrangement is called a step-up transformer However, in this arrangement,
there is less current in the secondary than in the primary (Np/Ns < 1 and Is
< Ip)