why the efficiency of the transformer is very high?

The efficiency of a transformer is very high, typically ranging from 95% to over 99%, due to its design and operational principles. Transformers operate on the principle of electromagnetic induction, which minimizes energy losses. Key factors contributing to high efficiency include low resistance in the windings, high-quality core materials that reduce hysteresis and eddy current losses, and optimal design that ensures minimal energy dissipation during the transfer of electrical energy between circuits.