What is a transformer typically used for?

Question

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

Answer 1

A transformer typically used for increasing or decreasing voltage. It is an electrical device that is designed to transfer electrical energy from one circuit to another by inducing a change in voltage across its coils. Transformers are commonly used in power stations and in various electrical appliances to step up or step down voltage levels as needed.