https://www.khanacademy.org/science/grade-10-physics-snc-aligned/x502b86fa259f0088:electrical-current/x502b86fa259f0088:electric-current/v/alternating-current-direct-current-what-is-frequency-pk 2025-12-18T00:50:41.122522621Z Alternating current, direct current & what is frequency? Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Alternating current, direct current & what is frequency? Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/241lQPvTOR0.mp4/241lQPvTOR0.mp4 773 Alternating current: characteristics, equations, and power https://www.khanacademy.org/science/electrical-engineering/ee-circuit-analysis-topic/ee-ac-analysis/v/ee-sine-of-time 2021-02-16T05:02:26Z Sine of time If we introduce time as the argument to the sine function, we get a sine wave. Animated. Willy McAllister video https://cdn.kastatic.org/googleusercontent/QnLXkFrwRcZYz9ZsSQgpo5GimVwo8xs1Aq0PuGKnKy9_unYUzd28Tv_KkBuWBmYV2PsGRQEforQjnpQdJCRy9XWQ Sine of time If we introduce time as the argument to the sine function, we get a sine wave. Animated. https://cdn.kastatic.org/ka-youtube-converted/R3en76G8_W0.mp4/R3en76G8_W0.mp4 638 Alternating current: characteristics, equations, and power