https://www.khanacademy.org/science/up-class-12-physics/x0958a876c1afdc76:alternating-current/x0958a876c1afdc76:ac-voltage-applied-to-resistor/e/phase-difference-between-voltage-and-current 2026-04-07T22:59:30.107127435Z Phase difference between voltage and current (using trigonometric identities) Let's solve some problems to better understand the phase difference between current and voltage in purely resistive, inductive, or capacitive circuits. Aakash exercise https://www.khanacademy.org/science/up-class-12-physics/x0958a876c1afdc76:alternating-current/x0958a876c1afdc76:ac-voltage-applied-to-resistor/e/leading-and-lagging-in-ac-circuits 2026-04-07T22:59:30.107127435Z Leading and lagging in ac circuits Let's solve some problems to better understand the leading and lagging of current and voltage in ac circuits. We will identify which one of the two leads or lags in different kinds of pure loads, inductive, capacitive and resistive, and also gain insight into why that happens. Aakash exercise https://www.khanacademy.org/science/up-class-12-physics/x0958a876c1afdc76:electromagnetic-induction/x0958a876c1afdc76:inductance/e/self-inductance 2026-04-08T00:36:09.500768563Z Self Inductance Let's solve some problems to better understand how we evaluate self-inductance and what it does in a circuit. Aakash exercise