why are transformers used in the transmission of electric power?

Transformers are essential in the transmission of electric power because they efficiently step up or step down voltage levels. By increasing voltage for long-distance transmission, transformers reduce current, which minimizes energy losses due to resistance in the wires. This allows electricity to be transmitted over vast distances with greater efficiency. At the distribution end, transformers lower the voltage to safe levels for consumer use, ensuring effective and safe delivery of electrical power.