Physics

Transformers

ट्रांसफॉर्मर (परिवर्तित्र)

In Class 12 Physics, this topic explains how transformers transfer electrical energy between circuits using electromagnetic induction and alternating current. Students learn the construction and working of step-up and step-down transformers, the roles of the primary and secondary coils and the iron core, and the relation between turns ratio, voltage, and current. The topic also covers transformer losses, efficiency, and their importance in raising voltage for transmission and reducing it for safe domestic use.