List of top Physics Questions on Transformers asked in COMEDK UGET

When a current of $5\text{ A}$ passes through the primary coil of a transformer of $200$ number turns, the magnetic flux linked with the secondary coil having $400$ turns is $600 \times 10^{-6}\text{ T m}^2$. Find the induced emf in the secondary coil, when the current in the primary coil increases at a rate of $2\text{ A s}^{-1}$.

A power transmission line feeds input power at \(2200\,V\) to a step-down transformer with its primary windings having \(2000\) turns. The output power is delivered at \(220\,V\) by the transformer. If the current in the primary of the transformer is \(2\,A\) and its efficiency is \(80\%\), the output current would be:

The ratio of the number of turns of the primary coil to the secondary coil of an ideal transformer is \( 5 : 1 \). The primary is connected to \( 220 \, V \) supply. What is the output power of the transformer if the output resistance is \( 11 \Omega \)?