hat is a transformer typically used for?

measuring electric current
increasing or decreasing voltage
transforming electrical energy into mechanical energy
generating electric curren

A transformer is typically used for increasing or decreasing voltage in an electrical circuit. It works by transferring electrical energy from one circuit to another through electromagnetic induction, without changing the frequency of the electrical current. This makes it useful in numerous applications where a specific voltage level is required, such as in power distribution systems, electrical appliances, and electronic devices.