What is the primary use of a transformer?

The primary use of a transformer is to change the voltage level of alternating current (AC). This device operates on the principle of electromagnetic induction and is crucial for the efficient transmission of electrical energy over long distances. By either increasing (stepping up) or decreasing (stepping down) the voltage, transformers help to manage the electrical energy flow, ensuring it is suitable for use in different applications.

When high voltage is employed for transmission, less current flows for the same power level, which reduces energy losses due to resistance in the wires. At the consumption end, transformers make it possible to lower the voltage to a safer level for use in homes and businesses. This ability to adjust voltage levels makes transformers essential components of the power distribution network, enhancing overall system efficiency and safety.