Ham Amateur Radio Technician Practice Exam 2025 - Free Technician Practice Questions and Study Guide

When the turns ratio of a transformer is increased, the output voltage also increases. This relationship is based on the transformer equation, which states that the ratio of the primary voltage (input) to the secondary voltage (output) is proportional to the turns ratio of the primary coil to the secondary coil. Specifically, an increased turns ratio means that there are more turns in the secondary coil compared to the primary coil. As a result, the transformer steps up the voltage from the primary to the secondary side.

For example, if a transformer has a turns ratio of 1:2, an input voltage of 10 volts will result in an output voltage of 20 volts. Therefore, as the turns ratio increases, the amount by which the input voltage is stepped up also increases, leading to a higher output voltage. Understanding this principle is crucial for working with transformers in various electrical applications, especially in radio communications where voltage levels often need to be adjusted for optimal performance.