Which of the following remains constant in an ideal step-down transformer?

A step-down transformer connected to an AC mains supply of 220 V operates an 11 V, 44 W lamp. Ignoring power losses, what is the current in the primary circuit?

A transformer has 200 turns in its primary winding and 1000 turns in its secondary winding. What type of transformer is this?

In a purely inductive AC circuit, what is the induced EMF voltage across the inductor?

Which fundamental principle is responsible for the working of an alternator?

Two identical coils are each connected to separate galvanometers. A magnet is moved rapidly toward the first coil and slowly toward the second coil. Based on Faraday's law of electromagnetic induction, how will the induced emf in the two coils compare?

Which of the following is correct according to Faraday's first law of electromagnetic induction?

Which of the following statements regarding induced EMF are correct? i) EMF induced in a stationary conductor due to a changing magnetic flux is called statically induced EMF. ii) EMF induced in a conductor moving relative to a magnetic field is called dynamically induced EMF. iii) EMF generated in a coil due to flux linkage change in the same coil is called mutually induced EMF. iv) EMF generated in a coil due to flux linkage change in an adjacent coil is called self-induced EMF.

Which device converts mechanical energy into electrical energy through electromagnetic induction?