A step down transformer has 1000 turns on the primary winding and 500 turns on the secondary winding. If the input voltage was 230 V the output voltage will be:
A) 2 V
B) 115 V
C) 200 V
D) 460 V.

Question

Quizplus · Accepted Answer

The turn ratio of primary to secondary of the transformer is 2:1 (since 1000/500 = 2/1). 
Using the transformer turn ratio equation:

Vp/Vs = Np/Ns

where Vp is the primary voltage, Vs is the secondary voltage, Np is the number of turns in the primary winding, and Ns is the number of turns in the secondary winding.

Substituting given values:

230/Vs = 1000/500

Solving for Vs:

Vs = 230 x 500/1000 = 115 V

Therefore, the output voltage will be 115 V.

A Step Down Transformer Has 1000 Turns on the Primary