What is the function of a transformer in power distribution?

The function of a transformer in power distribution is primarily to step up or step down voltage levels for efficient transmission and utilization. When electricity is generated, it is often at a lower voltage which is not efficient for long-distance transmission due to power loss. Transformers increase the voltage (step up) for transmission over long distances, which minimizes energy losses. Upon reaching its destination or local distribution points, the transformer then reduces the voltage (step down) to a safer and more usable level for residential and commercial usage. This capability of adjusting voltage levels is essential to ensure that power is delivered safely and efficiently.

The other options do not accurately define the role of a transformer in the power distribution system. For instance, converting AC to DC current pertains to rectification, not transformer operation. Similarly, transformers do not power generators nor distribute power wirelessly—both functions lie outside their designed purpose.