Draw a well labelled diagram of step up transformer and step down transformer.

A well labelled diagram of step up transformer and step down transformer is given below:

Although the voltage increases in a step-up transformer, the current is reduced proportionately. ... In other words, power equals voltage times current. A transformer transfers power from the primary coil to the secondary coil. Since the power must stay the same, if the voltage increases, the current must decrease.Step-up transformers are used in central power stations. They allow the stations to increase the voltage to the necessary level to produce electricity. The electricity is then transmitted through power lines. However, high voltages are very dangerous for commercial or residential use.

This increase in voltage for transmission and decrease in voltage for utilization can only be achieved by using a step-up and step-down transformer. The major difference between step-up and step-down transformer is, step-up transformer raises the output voltage, whereas step-down transformer reduces the output voltage.