why are step up and step down transformers used for transmitting power more efficiently?

Step-up and step-down transformers are essential for efficient power transmission. Step-up transformers increase voltage for long-distance transmission, reducing current and minimizing resistive losses in the wires. Conversely, step-down transformers decrease voltage for safe distribution to consumers. By adjusting voltage levels, these transformers optimize power transfer, ensuring minimal energy loss and enhancing overall system efficiency, which is crucial for reliable electricity supply across vast distances.