Which transformer has more wire turns on the primary side than the secondary side?

A step-down transformer is designed specifically to reduce voltage from the primary side to the secondary side. In this type of transformer, there are indeed more wire turns on the primary side than there are on the secondary side. This configuration allows the transformer to convert a higher voltage input from the primary winding to a lower voltage output on the secondary winding, following the principle that the voltage ratio between the primary and secondary is proportional to the number of turns on each side.

The difference in the number of wire turns creates a difference in voltage, which is crucial in many applications where reducing voltage is necessary, such as in power distribution systems for household appliances. The basic formula governing the relationship between the number of turns and voltage is that the primary voltage is to the secondary voltage as the number of turns on the primary is to the number of turns on the secondary. Therefore, in a step-down transformer where the voltage is reduced, it is essential for the primary winding to have more turns than the secondary winding.

Understanding this relationship is fundamental in electrical engineering and helps in selecting the appropriate transformer for specific applications, particularly in scenarios where it's necessary to safely deliver lower voltages to devices from higher voltage sources.