Transformers are used to increase or decrease voltage levels, while inductors are used primarily to store energy in an electric current. Transformers are found in many appliances and electronic equipment. The transformer has two coils, a primary coil and a secondary coil instead of wires with voltage differences in it. Inductors have only one coil and are used to store energy in a magnetic field. The transformer has two types of application such as step-up or step-down circuits which are used for different purposes in homes and industries.