https://diler.tube/videos/watch/035573f8-8240-4d87-a6ec-e52dcd2fb7ce Transformers step up (increase) or step down (decrease) AC voltage using the principle of electromagnetic induction - mutual induction. A changing current in the primary coil induces an e.m.f in the secondary. Since the e.m.f generated depends on the number of turns, the voltage induced in the secondary can be changed - stepped up or down - by altering the turn's ratio. Khan Academy India explains the fundamental principles of electromagnetic induction that allow transformers to alter voltage levels. The discussion covers the relationship between primary and secondary coil turns and why these devices require alternating current to operate efficiently. Tue, 06 Oct 2026 14:48:03 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://diler.tube https://diler.tube/lazy-static/avatars/f58b270a-6076-478a-ad43-3888a532ecb4.png https://diler.tube/videos/watch/035573f8-8240-4d87-a6ec-e52dcd2fb7ce All rights reserved, unless otherwise specified in the terms specified at https://diler.tube/about and potential licenses granted by each content's rightholder.