List of top Physics Questions on Alternating current asked in KCET

The value of alternating emf $E$ in the given circuit will be

A current of $5\,A$ is flowing at $220 \,V$ in the primary coil of a transformer. If the voltage produced in the secondary coil is $2200\, V$ and $50\%$ of power is lost, then the current in the secondary will be

The time taken by AC of 50 Hz in reacting from zero to the maximum value is