In a ideal transformer, the turns ratio Np / Ns = 1 / 2. The ratio Vs : Vp is equal to (the symbols carry their usual meaning) :

Question

In a ideal transformer, the turns ratio \(\frac{N_p}{N_s} = \frac{1}{2}\). The ratio \(V_s:V_p\) is equal to (the symbols carry their usual meaning) : 

(1) 1 : 2 

(2) 2 : 1 

(3) 1 : 1 

(4) 1 : 4

Answer 1

Correct option is : (2) 2 : 1 

For ideal transformer 

\(\frac{V_s}{V_p} = \frac{N_s}{N_p} = 2 : 1\)