The ratio of coils of wire in the primary winding to the secondary winding of a transformer is 3:2. How does the transformer change the voltage of a current applied to the primary winding?

For an ideal transformer, the voltage ratio matches the turns ratio: secondary voltage divided by primary voltage equals secondary turns divided by primary turns. With 3 primary coils and 2 secondary coils, the output voltage is 2/3 of the input voltage. Therefore, the transformer decreases the voltage to two-thirds the original.

AI-written and checked against the verified answer.