AC voltage across a capacitor (derivation) | Alternating currents | Physics | Khan Academy https://diler.tube/videos/watch/afc00f7b-2c6c-43ef-9b2f-3901fcdef5ba hen an alternating voltage is applied across a capacitor, the current leads the voltage by a phase angle of 90 degrees. This means the current oscillates a quarter of the cycle ahead of the voltage. Let's derive an expression for this current. Sun, 18 Oct 2026 07:30:37 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://diler.tube AC voltage across a capacitor (derivation) | Alternating currents | Physics | Khan Academy https://diler.tube/lazy-static/avatars/f58b270a-6076-478a-ad43-3888a532ecb4.png https://diler.tube/videos/watch/afc00f7b-2c6c-43ef-9b2f-3901fcdef5ba All rights reserved, unless otherwise specified in the terms specified at https://diler.tube/about and potential licenses granted by each content's rightholder.