https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:current-resistivity-ohms-law/v/electric-power 2021-02-07T17:14:01Z Electric power In this video David derives the formula to find the power used by a resistor. David SantoPietro video https://cdn.kastatic.org/googleusercontent/psrWwmdyil3NK5TgZha2voCapkkugfOi4Whifsj114iu3M2vK8MtrcSB8Izr0Tm_atxfY_ViR9s-88P_i5j-SLdx Electric power In this video David derives the formula to find the power used by a resistor. https://cdn.kastatic.org/ka-youtube-converted/3zt7DWUiaDE.mp4/3zt7DWUiaDE.mp4 643 Electrical Power https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-circuits/x0e04e0cb682fb793:electrical-power/e/electric-power 2021-04-29T07:52:13Z Electric power (formula) Let's practice some problems to better understand the concept of electric power and its relation with voltage and current in a circuit. Satrajit exercise https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-circuits/x0e04e0cb682fb793:electrical-power/v/solved-example-power-dissipated-in-bulbs-1080p 2026-05-11T04:40:42.021307954Z Solved example Power dissipated in bulbs Solved example Power dissipated in bulbs Khan Academy Pakistan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Solved example Power dissipated in bulbs Solved example Power dissipated in bulbs https://cdn.kastatic.org/ka-youtube-converted/h2uS_QCIc6o.mp4/h2uS_QCIc6o.mp4 772 Electrical Power https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-circuits/x0e04e0cb682fb793:electrical-power/v/electric-power-energy-ur 2025-08-08T00:50:08.705567982Z Electric power & energy Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Electric power & energy Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/UDLnRDhVZ7I.mp4/UDLnRDhVZ7I.mp4 479 Electrical Power https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-circuits/x0e04e0cb682fb793:electrical-power/v/solved-example-calculating-power-heat-dissipated-pk 2025-12-18T00:50:41.122522621Z Solved example - Calculating power & heat dissipated Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Solved example - Calculating power & heat dissipated Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/2t62NKZCKc0.mp4/2t62NKZCKc0.mp4 647 Electrical Power https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-circuits/x0e04e0cb682fb793:electrical-power/e/calculating-heat-dissipated-in-circuits 2025-02-02T07:53:56.460765089Z Calculating heat dissipated in circuits Let's practice problems involving calculating the heat dissipated in electric circuits. Satrajit exercise https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-circuits/x0e04e0cb682fb793:electrical-power/v/commercial-unit-of-electrical-energy-ur 2025-08-08T00:50:08.705567982Z Commercial unit of electrical energy Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Commercial unit of electrical energy Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/oaYCW2G-LZA.mp4/oaYCW2G-LZA.mp4 550 Electrical Power https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-circuits/x0e04e0cb682fb793:electrical-power/v/solved-example-cost-of-operation-of-electrical-device-pk 2025-12-18T00:50:41.122522621Z Solved example - Cost of operation of electrical device Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Solved example - Cost of operation of electrical device Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/_9buulQGWF4.mp4/_9buulQGWF4.mp4 571 Electrical Power https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-circuits/x0e04e0cb682fb793:electrical-power/e/finding-cost-of-electrical-operation 2026-04-07T23:36:17.218592739Z Finding cost of electrical operation Let's practice some problems to understand how to calculate the cost of operating electrical devices over certain periods of time. exercise