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⭐️ Check out our website https://www.cognito.org/ ⭐️ *** WHAT'S COVERED *** 1. The role of transformers in the National Grid. * Using step-up transformers. * Using step-down transformers. 2. The basic structure of a transformer. * Primary coil, secondary coil and iron core. 3. The process of electromagnetic induction in a transformer. 4. How transformers change voltage. * The relationship between the number of turns on the primary and secondary coils. * How step-up transformers increase voltage. * How step-down transformers decrease voltage. *** EXAM BOARD INFO *** AQA - Separate/triple science and higher tier only IGCSE Edexcel - Separate/triple science and higher tier only Edexcel - Higher tier only OCR 21st Century - Separate/triple science and higher tier only OCR Gateway - Separate/triple science and higher tier only *** CHAPTERS *** 0:00 Intro & Role in National Grid 1:07 Transformer Structure 1:24 How Transformers Work (Step-by-Step) 3:21 Changing the Voltage (Step-up vs Step-down) *** PLAYLISTS *** https://youtube.com/playlist?list=PLidqqIGKox7XPh1QacLRiKto_UlnRIEVh&si=orIUwL3o2jOoiYjT https://youtube.com/playlist?list=PLidqqIGKox7X5UFT-expKIuR-i-BN3Q1g&si=DcihOwUkd9oWbbdp https://youtube.com/playlist?list=PLidqqIGKox7WeOKVGHxcd69kKqtwrKl8W&si=Y8MsO-FK948jnxpS https://youtube.com/playlist?list=PLidqqIGKox7UVC-8WC9djoeBzwxPeXph7&si=-7i5Iq7yOeJrhtu6 https://youtube.com/playlist?list=PLidqqIGKox7VKJD2WxRhoKaI6JGLVean8&si=NH_Q1ujhVgACM2FU #GCSE #Physics #study #revision #school #exam #AQA #OCR #Edexcel #IGCSE #IB #AP
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