https://www.khanacademy.org/science/up-class-12-physics/x0958a876c1afdc76:alternating-current/x0958a876c1afdc76:ac-voltage-applied-to-resistor/v/ac-voltage-applied-to-resistors 2021-06-03T19:40:48Z AC voltage applied to resistors When an alternating voltage is applied to a purely resistive circuit, the current can be calculated using Ohm's law. We find the current also alternates in phase with the voltage. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw AC voltage applied to resistors When an alternating voltage is applied to a purely resistive circuit, the current can be calculated using Ohm's law. We find the current also alternates in phase with the voltage. https://cdn.kastatic.org/ka-youtube-converted/qaz3gL3-vvY.mp4/qaz3gL3-vvY.mp4 541 Alternating current https://www.khanacademy.org/science/up-class-12-physics/x0958a876c1afdc76:alternating-current/x0958a876c1afdc76:phasor-diagrams/v/phasor-diagram-its-applications 2021-06-03T19:40:48Z Phasor diagram (& its applications) Phasors are rotating vectors having the length equal to the peak value of oscillations, and the angular speed equal to the angular frequency of the oscillations. They are helpful in depicting the phase relationships between two or more oscillations. They are also a useful tool to add/subtract oscillations. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Phasor diagram (& its applications) Phasors are rotating vectors having the length equal to the peak value of oscillations, and the angular speed equal to the angular frequency of the oscillations. They are helpful in depicting the phase relationships between two or more oscillations. They are also a useful tool to add/subtract oscillations. https://cdn.kastatic.org/ka-youtube-converted/7KZdpF2NBaw.mp4/7KZdpF2NBaw.mp4 673 Alternating current https://www.khanacademy.org/science/jnv-board-preparation-class-12-physics/x194606e36b639209:week-3/x194606e36b639209:alternating-current/e/alternating-current 2026-04-08T00:16:02.937952483Z Alternating current Let's practice! vibhor exercise