Sample Transformer Problem

A transformer has 8 windings in its primary core and 5 in its secondary coil.  If the primary voltage is 240 V, find the secondary voltage.

Answer:

Because electric power must be the same in both coils, the following relationship must be true.

For this problem we only need the number of turns (N) and voltage (V).

       Rearranging the equation we get   . 

V₁= 240V,  N₁=8 turns, N₂=5 turns