जब कुंडली की गति की दिशा चुंबकीय क्षेत्र के समकोण (right angle) पर होती है, तो प्रेरित धारा (induced current) _________ होती है।

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?