The voltage entering a transformer's primary winding is 120 volts. The primary winding is wrapped around the iron core 10 times. The secondary coil is wrapped around the core 4 times. What is the voltage leaving the transformer?

the answer is for the question on edge is 48 ...

Answer

48 Volts

Explanation

The question can be solve using the turn rule of a transformer that states;

Np/Ns = Vp/Vs

Where Np ⇒ number of turns in the primary coil.

Ns ⇒number of turns in the seconndary coil

Vp ⇒ primary voltage

Vs ⇒secondary voltage

Np/Ns = Vp/Vs

10/4 = 120/Vp

Vp = (120 * 4) / 10

= 480/10

= 48 Volts