https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:circuits-with-capacitors/v/capacitors-and-capacitance 2023-09-10T17:11:17.624018169Z Capacitors and capacitance Capacitors, essential components in electronics, store charge between two pieces of metal separated by an insulator. This video explains how capacitors work, the concept of capacitance, and how varying physical characteristics can alter a capacitor's ability to store chargeBy David Santo Pietro. David SantoPietro video https://cdn.kastatic.org/googleusercontent/Erhfbhr3H4VKd9Eyf4ImWT7iyOzHCeEkWUYeABGgNbTVIPnuBhoqbihUS5lobpkhV7T7LyL4kwVyCDlazUYLxWmI Capacitors and capacitance Capacitors, essential components in electronics, store charge between two pieces of metal separated by an insulator. This video explains how capacitors work, the concept of capacitance, and how varying physical characteristics can alter a capacitor's ability to store chargeBy David Santo Pietro. https://cdn.kastatic.org/ka-youtube-converted/u-jigaMJT10.mp4/u-jigaMJT10.mp4 343 Capacitors: capacitance, energy, discharge, and applications https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:circuits-with-capacitors/v/capacitors-series 2021-03-23T09:44:54Z Capacitors in series When capacitors are connected one after another, they are said to be in series. For capacitors in series, the total capacitance can be found by adding the reciprocals of the individual capacitances, and taking the reciprocal of the sum. Therefore, the total capacitance will be lower than the capacitance of any single capacitor in the circuit. David SantoPietro video https://cdn.kastatic.org/googleusercontent/0arF5WN3V2VICL5hqtFVB6tWQk3G7dwihryjCgXJ7SSsAYz_hbEz9xp9eYtDSnRWUY1EyCbXTCzSO2bmkJ0RCzA Capacitors in series When capacitors are connected one after another, they are said to be in series. For capacitors in series, the total capacitance can be found by adding the reciprocals of the individual capacitances, and taking the reciprocal of the sum. Therefore, the total capacitance will be lower than the capacitance of any single capacitor in the circuit. https://cdn.kastatic.org/ka-youtube-converted/-MaD9Ycy3a4.mp4/-MaD9Ycy3a4.mp4 575 Capacitors: capacitance, energy, discharge, and applications https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:circuits-with-capacitors/v/capacitors-parallel 2022-11-16T04:22:43.7414897Z Capacitors in parallel A capacitator is a device that stores electrical energy in an electrical field. This video discusses the behavior of two capacitors connected in parallel. It compares two capacitators, and shows how to calculate the amount of charge each will receive. Finally, it discusses how to find the equivalent capacitance of the two capacitors combined. David SantoPietro video https://cdn.kastatic.org/googleusercontent/SAn3e2MXUd8oRxpEW-jJnK6fvk-Za2twP88GGpKgRGFLfArzBRh_iAejRV23TxXycs1l-Hl-n6_xxpvFxjr96bAU Capacitors in parallel A capacitator is a device that stores electrical energy in an electrical field. This video discusses the behavior of two capacitors connected in parallel. It compares two capacitators, and shows how to calculate the amount of charge each will receive. Finally, it discusses how to find the equivalent capacitance of the two capacitors combined. https://cdn.kastatic.org/ka-youtube-converted/P-1mWGeJjmg.mp4/P-1mWGeJjmg.mp4 601 Capacitors: capacitance, energy, discharge, and applications https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:circuits-with-capacitors/v/energy-capacitor 2023-09-10T17:11:17.624018169Z Energy of a capacitor Capacitors store energy as electrical potential. When charged, a capacitor's energy is 1/2 Q times V, not Q times V, because charges drop through less voltage over time. The energy can also be expressed as 1/2 times capacitance times voltage squared. Remember, the voltage refers to the voltage across the capacitor, not necessarily the battery voltage. By David Santo Pietro. David SantoPietro video https://cdn.kastatic.org/googleusercontent/f4ZdSDqdkf2Yk--5yxYS-vGmAvlPWpgVWrtFJwWl5FkRsZkehaUy6wvF2hXxAFT5gZ0OGT5EEjD09ad5KjgHWio Energy of a capacitor Capacitors store energy as electrical potential. When charged, a capacitor's energy is 1/2 Q times V, not Q times V, because charges drop through less voltage over time. The energy can also be expressed as 1/2 times capacitance times voltage squared. Remember, the voltage refers to the voltage across the capacitor, not necessarily the battery voltage. By David Santo Pietro. https://cdn.kastatic.org/ka-youtube-converted/SIU_9SMd5q0.mp4/SIU_9SMd5q0.mp4 383 Capacitors: capacitance, energy, discharge, and applications https://www.khanacademy.org/science/electrical-engineering/ee-circuit-analysis-topic/ee-natural-and-forced-response/v/ee-rc-natural-response-intuition 2021-02-16T05:02:27Z RC natural response - intuition We put some charge on a capacitor in an RC circuit and observe what happens to the voltage and current. This is called the natural response. Willy McAllister video https://cdn.kastatic.org/googleusercontent/CbYDfhG8gOOfD6Xs2a3ERn_aa7PuGz-m3h00dttHULXvSkLLOnrAJfNVfGftU-fCZGWiYEWL3i1Vp02rJqAc3VA RC natural response - intuition We put some charge on a capacitor in an RC circuit and observe what happens to the voltage and current. This is called the natural response. https://cdn.kastatic.org/ka-youtube-converted/PZM6acXvsoQ.mp4/PZM6acXvsoQ.mp4 446 Capacitors: capacitance, energy, discharge, and applications https://www.khanacademy.org/science/electrical-engineering/ee-circuit-analysis-topic/ee-natural-and-forced-response/a/ee-rc-natural-response 2025-06-30T13:24:56.290137498Z RC natural response Natural response of an RC circuit. The product of R and C is called the time constant. Written by Willy McAllister. article https://www.khanacademy.org/science/electrical-engineering/ee-circuit-analysis-topic/ee-natural-and-forced-response/v/ee-rc-natural-response-derivation 2021-02-16T05:02:26Z RC natural response - derivation We derive the natural response of an RC circuit and discover it has an exponential form. Willy McAllister video https://cdn.kastatic.org/googleusercontent/NsX3gY1cQBpF7b8ygnatDnKzc126t3RSdm6Plp4uUARtAOSp5HVTqWGQO0sbzCz_o3762uM5dw4eG2Prp2v8uEI1 RC natural response - derivation We derive the natural response of an RC circuit and discover it has an exponential form. https://cdn.kastatic.org/ka-youtube-converted/4qgLz0TF8-M.mp4/4qgLz0TF8-M.mp4 659 Capacitors: capacitance, energy, discharge, and applications https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:circuits-with-capacitors/v/dielectrics-capacitors 2023-09-10T17:11:17.624018169Z Dielectrics in capacitors Capacitors use non-conducting materials, or dielectrics, to store charge and increase capacitance. Dielectrics, when placed between charged capacitor plates, become polarized, reducing the voltage across the plates and increasing capacitance. The degree of capacitance increase depends on the dielectric constant of the material used. By David Santo Pietro. David SantoPietro video https://cdn.kastatic.org/googleusercontent/rPwQoqJGBA2AmgNU94EH3U_JRWVTQQ3yIVkBybIL451IG268ItP0tX1fWiaWDkQz7FpzSqx9Qb_f4cvcMxkQy4k Dielectrics in capacitors Capacitors use non-conducting materials, or dielectrics, to store charge and increase capacitance. Dielectrics, when placed between charged capacitor plates, become polarized, reducing the voltage across the plates and increasing capacitance. The degree of capacitance increase depends on the dielectric constant of the material used. By David Santo Pietro. https://cdn.kastatic.org/ka-youtube-converted/rkntp3_cZl4.mp4/rkntp3_cZl4.mp4 387 Capacitors: capacitance, energy, discharge, and applications