https://www.khanacademy.org/science/mh-grade-8-science/x0f256b8de9c7cf34:current-electricity-and-magnetism/x0f256b8de9c7cf34:current-electricity/v/simple-circuit 2023-07-03T13:44:16.33096147Z Simple circuit Let's have a look at a simple electrical circuit in action! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Simple circuit Let's have a look at a simple electrical circuit in action! https://cdn.kastatic.org/ka-youtube-converted/PitxKnfAtRc.mp4/PitxKnfAtRc.mp4 121 Electrical circuit and electromagnet https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:circuits-oms-kirchhoffs-laws/v/electric_current 2024-05-14T13:21:48.153833747Z Electric current Electric current is the net rate that charge flows through a cross-sectional area. Current is measured in amperes (A), equivalent to coulombs per second (C/s). Current flows when there is an electric potential difference (voltage) between two points, and there are charge carriers that are free to move between those points. Electrical conductors (metals) contain electrons that are free to move. Electrons are the drifting particles in a current-carrying wire, but conventional current is defined as the direction that positive charge would flow. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/c378c0d0-d325-46f8-89e6-2bf7a9b6cb55_1280_720_base.png Electric current Electric current is the net rate that charge flows through a cross-sectional area. Current is measured in amperes (A), equivalent to coulombs per second (C/s). Current flows when there is an electric potential difference (voltage) between two points, and there are charge carriers that are free to move between those points. Electrical conductors (metals) contain electrons that are free to move. Electrons are the drifting particles in a current-carrying wire, but conventional current is defined as the direction that positive charge would flow. https://cdn.kastatic.org/ka-youtube-converted/6K1Bl0cqecE.mp4/6K1Bl0cqecE.mp4 809 Electrical circuit and electromagnet https://www.khanacademy.org/science/mh-grade-9-bridge-course-science/x109ad1e366099af5:current-electricity-and-magnetism/x109ad1e366099af5:current-electricity/e/electric-current-and-devices 2025-06-02T20:42:58.649337325Z Electric current Let's solve some problems to better understand electric current and devices Aakash Bagga exercise https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-force-field-and-potential/x0e2f5a2c:electric-charge-and-electric-force/v/conductors-and-insulators 2022-11-16T04:22:43.7414897Z Conductors and insulators A conductor is a material that allows electrons to flow freely through it, making it useful for carrying electric current. An insulatoris a material that resists the flow of electrons, so it does not allow electric current to pass through it. Learn about how conductors and insulators work and how they are effected by changes in electrical current. David SantoPietro video https://cdn.kastatic.org/googleusercontent/zXXGdtnd9yd2iJfpB9VR7A5oPDWXMbCEKQoRLI62DH9IuNEmhCCvuToJKY_OpHR6VJHC-eEB8n24nmXWfhnC1eaCGQ Conductors and insulators A conductor is a material that allows electrons to flow freely through it, making it useful for carrying electric current. An insulatoris a material that resists the flow of electrons, so it does not allow electric current to pass through it. Learn about how conductors and insulators work and how they are effected by changes in electrical current. https://cdn.kastatic.org/ka-youtube-converted/ZgDIX2GOaxQ.mp4/ZgDIX2GOaxQ.mp4 813 Electrical circuit and electromagnet https://www.khanacademy.org/science/telangana-class-6-science/x274096cca8bb3cfc:simple-electric-circuits/x274096cca8bb3cfc:electric-bulb/e/electric-devices 2026-04-08T00:36:09.500768563Z Electric devices Let's solve some questions! vibhor exercise https://www.khanacademy.org/science/odia-class-10-physical-sciences/x28e877d8a7566183:in-in-magnetic-effects-of-electric-current/x28e877d8a7566183:domestic-circuits/e/domestic-electric-circuits 2025-03-07T16:46:39.713768191Z Domestic electric circuits Let's solve some questions! vibhor exercise https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-circuits/x0e04e0cb682fb793:practical-electricity/e/precautions-and-safety-measures-in-electric-bells-and-other-appliances 2024-10-24T23:10:25.930979091Z Precautions and safety measures in electric bells and other appliances Let's solve some questions! vibhor exercise https://www.khanacademy.org/science/mh-grade-8-science/x0f256b8de9c7cf34:current-electricity-and-magnetism/x0f256b8de9c7cf34:magnetism/v/activity-electromagnet 2023-07-03T13:44:16.33096147Z Activity: Electromagnet Have you ever seen an iron nail attract other iron pieces! Well, be prepared! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Activity: Electromagnet Have you ever seen an iron nail attract other iron pieces! Well, be prepared! https://cdn.kastatic.org/ka-youtube-converted/omAdc2ImbMM.mp4/omAdc2ImbMM.mp4 252 Electrical circuit and electromagnet https://www.khanacademy.org/science/mh-grade-8-science/x0f256b8de9c7cf34:current-electricity-and-magnetism/x0f256b8de9c7cf34:magnetism/v/explanation-electromagnet 2023-07-03T13:44:16.33096147Z Explanation: Electromagnet Let's look at the explanation of the activity on Electromagnet! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Explanation: Electromagnet Let's look at the explanation of the activity on Electromagnet! https://cdn.kastatic.org/ka-youtube-converted/uwJgLrlSsyU.mp4/uwJgLrlSsyU.mp4 110 Electrical circuit and electromagnet https://www.khanacademy.org/science/physics/discoveries/electromagnet/v/discovery-of-electromagnetism 2021-02-07T17:14:00Z Discovery of electromagnetism Hans Christian Ørsted made this famous observation in 1819. Brit Cruise video https://cdn.kastatic.org/googleusercontent/QXVaytRC0HZW736adUlDGrLGrcjNfEouN6P1jMZ3t5TthwBtl2y3hIFclMmUepxzWUwNruIU0zi8VVlu71ii7oY Discovery of electromagnetism Hans Christian Ørsted made this famous observation in 1819. https://cdn.kastatic.org/ka-youtube-converted/9u0ApENWT-Q.mp4/9u0ApENWT-Q.mp4 41 Electrical circuit and electromagnet https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:magnetism/x0e04e0cb682fb793:magnetic-fiels/e/electromagnets 2026-04-08T01:19:59.083532605Z Electromagnets Let's solve some questions! vibhor exercise https://www.khanacademy.org/science/electromagnetism/x4352f0cb3cc997f5:welcome-to-electromagnetism/x4352f0cb3cc997f5:introduction-to-em-essentials/v/electromagnetism-essentials-intro 2023-06-28T02:21:54.586979141Z Electromagnetism essentials intro Lightning, one of the most powerful forces of nature, ⚡️ shares a LOT in common with the humble fridge magnet. You know what is - ELECTROMAGNETISM ⚡️ It's the dynamic duo of electricity and magnetism, that work together to gives smartphones 📱, electric trains 🚆, auroras, and light itself. Are you ready to unravel the mysteries of this extraordinary force? If you are, well we have just the course for you! Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/21694e5b-f321-46a0-b25d-9155b67b17c4_1280_720_base.png Electromagnetism essentials intro Lightning, one of the most powerful forces of nature, ⚡️ shares a LOT in common with the humble fridge magnet. You know what is - ELECTROMAGNETISM ⚡️ It's the dynamic duo of electricity and magnetism, that work together to gives smartphones 📱, electric trains 🚆, auroras, and light itself. Are you ready to unravel the mysteries of this extraordinary force? If you are, well we have just the course for you! https://cdn.kastatic.org/ka-youtube-converted/SHdUttPID8A.mp4/SHdUttPID8A.mp4 114 Electrical circuit and electromagnet https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:magnetism/x0e04e0cb682fb793:magnetic-fiels/v/electromagnetism-ms 2024-01-04T21:41:56.674101033Z Electromagnetism Moving electric charges create magnetic fields in the space around them. These magnetic fields can be used to generate magnetic forces. Oppositely, when magnetic fields are changed around charges, they can create moving electric charges, or electricity. Both of these phenomena are called electromagnetism, which is used in everyday items, from motors to medical scanners. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/6277a443-a134-46c7-bcff-2d96a7679f90_1280_720_base.png Electromagnetism Moving electric charges create magnetic fields in the space around them. These magnetic fields can be used to generate magnetic forces. Oppositely, when magnetic fields are changed around charges, they can create moving electric charges, or electricity. Both of these phenomena are called electromagnetism, which is used in everyday items, from motors to medical scanners. https://cdn.kastatic.org/ka-youtube-converted/E77NeY5Zmk8.mp4/E77NeY5Zmk8.mp4 254 Electrical circuit and electromagnet https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:magnetism/x0e04e0cb682fb793:magnetic-fiels/e/understand-electromagnetism 2026-06-30T16:30:41.535282189Z Apply: Electric and magnetic forces Apply your knowledge of electric and magnetic forces in this set of free, standards-aligned practice questions. Khan Academy exercise https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:magnetism/x0e04e0cb682fb793:magnetic-fiels/a/electromagnetism 2026-06-13T14:10:34.285337154Z Learn and try: Electric and magnetic forces Investigate electric and magnetic fields and forces. Discover how these interactions are fundamentally related. Use a PhET simulation to explore how an electric generator uses motion to produce electric current. article