transformer

What is a transformer? Describe its construction and working in detail. What is the transformer equation? Describe its different types.

Transformer: A transformer is an electrical device used to change the voltage level of an alternating current (AC) in a circuit. It operates on the principle of electromagnetic induction to either step up (increase) or step down (decrease) the voltage. It works only with AC and is widely used in power transmission, electrical appliances, and … Read more

Why is the output of a transformer zero if DC voltage is applied to its primary coil?

A transformer works on the principle of electromagnetic induction, which requires a changing magnetic field to induce voltage in the secondary coil. When DC voltage is applied, the current remains constant, producing a steady magnetic field instead of a changing one. Since no electromagnetic induction occurs, no voltage is induced in the secondary coil, resulting … Read more