https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:compound-circuits/v/ee-series-resistors 2021-03-01T15:43:22Z Series resistors Resistors connected head-to-tail are in series. The equivalent overall resistance is the sum of the individual resistance values. Willy McAllister video https://cdn.kastatic.org/googleusercontent/Kmnq8z0uwC3F3vonbIgz2lNKaTZG5OmKTcDF5sB4HphmUopJgL5EdyPIGwAKIzSqiwDrI8z7HBNtw9NyF8RQYHg Series resistors Resistors connected head-to-tail are in series. The equivalent overall resistance is the sum of the individual resistance values. https://cdn.kastatic.org/ka-youtube-converted/P_SELh0dPW0.mp4/P_SELh0dPW0.mp4 717 Series and Parallel Resistance https://www.khanacademy.org/science/electrical-engineering/ee-circuit-analysis-topic/ee-resistor-circuits/a/ee-series-resistors 2025-06-30T13:24:56.290137498Z Series resistors Resistors connected head-to-tail are in series. The equivalent overall resistance is the sum of the individual resistance values. article https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:compound-circuits/v/ee-parallel-resistors-3 2024-06-22T03:34:22.722178841Z Parallel resistors Practice calculating equivalent resistance for resistors in parallel. In the special case where two equal resistors are in parallel, the equivalent resistance is half their value. Parallel resistance is always smaller than the smallest resistor, as it provides multiple current paths, effectively reducing the overall resistance in the circuit. Willy McAllister video https://cdn.kastatic.org/googleusercontent/_yp9Txe7ke6sminM2CJhZcLANlu5MEHXSzLWz3ITfmYqRQ5-WW-Py6vd7SThvMmbRy_A7FrLGYIbQaLnuQim5d4fww Parallel resistors Practice calculating equivalent resistance for resistors in parallel. In the special case where two equal resistors are in parallel, the equivalent resistance is half their value. Parallel resistance is always smaller than the smallest resistor, as it provides multiple current paths, effectively reducing the overall resistance in the circuit. https://cdn.kastatic.org/ka-youtube-converted/S0AJZjt0sEg.mp4/S0AJZjt0sEg.mp4 561 Series and Parallel Resistance https://www.khanacademy.org/science/electrical-engineering/ee-circuit-analysis-topic/ee-resistor-circuits/a/ee-parallel-resistors 2025-06-30T13:24:56.290137498Z Parallel resistors Resistors are in parallel if their terminals are connected to the same two nodes. The equivalent overall resistance is smaller than the smallest parallel resistor. article https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:compound-circuits/e/finding-equivalent-resistance 2026-04-08T00:36:09.500768563Z Finding equivalent resistance Let's practice calculating the equivalent resistances of given combinations of resistors. Satrajit exercise https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:compound-circuits/v/ee-simplifying-resistor-networks 2024-06-20T21:38:16.009746376Z Simplifying resistor networks Learn strategies for combining resistors in series and parallel to simplify resistor networks. Willy McAllister video https://cdn.kastatic.org/googleusercontent/xNI2Ey0hPU7TYKMoiZpLZGGd-F5BLIlUhst9D4X03T6_xefRP2o1W7x_t0ftKva6iaPiiOMexWOK-oPOGvMuSins Simplifying resistor networks Learn strategies for combining resistors in series and parallel to simplify resistor networks. https://cdn.kastatic.org/ka-youtube-converted/tnYQ_tQmYrM.mp4/tnYQ_tQmYrM.mp4 486 Series and Parallel Resistance https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:compound-circuits/a/ee-simplifying-resistor-networks 2025-06-29T14:05:25.960236269Z Simplifying resistor networks Learn how to combine series and parallel resistors to reduce the complexity of a circuit. article https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:compound-circuits/e/simplifying-resistor-networks 2026-04-07T23:55:07.30621384Z Simplifying resistor networks Practice problems involving resistors in networks of series and parallel combinations. Satrajit exercise https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-circuits/x0e04e0cb682fb793:series-and-parallel-resistance/v/current-through-resistor-in-parallel-worked-example 2022-09-11T00:00:59.65734597Z Current through resistor in parallel: Worked example How to calculate the current through a resistor in parallel using equivalent resistance and Ohm's law. video https://cdn.kastatic.org/googleusercontent/v3vkuqDRNdk9XURnI6esTtPvR7KvHfcz46TCukSU7JzTIbH5ls3Q76PkcXcUPLKS4End6UkrQFCu_naDWm1XfwqI Current through resistor in parallel: Worked example How to calculate the current through a resistor in parallel using equivalent resistance and Ohm's law. https://cdn.kastatic.org/ka-youtube-converted/YZGSEcLlIH0.mp4/YZGSEcLlIH0.mp4 273 Series and Parallel Resistance https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-circuits/x0e04e0cb682fb793:series-and-parallel-resistance/v/current-due-to-closing-a-switch-worked-example 2022-09-11T00:00:59.65734597Z Current due to closing a switch: worked example Find the current due to closing a switch using equivalent resistance and Ohm's law. video https://cdn.kastatic.org/googleusercontent/2vkrUcfIL1w1FKQutxjHpG5V7ltZLU7jxH5fxhSchrxDVDO9met8_DcCqEF1nVZKFlu98Kr_khi97wY794aoueyc5w Current due to closing a switch: worked example Find the current due to closing a switch using equivalent resistance and Ohm's law. https://cdn.kastatic.org/ka-youtube-converted/K_K5AQeVGzM.mp4/K_K5AQeVGzM.mp4 166 Series and Parallel Resistance https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-circuits/x0e04e0cb682fb793:series-and-parallel-resistance/v/solved-example-finding-current-and-voltage-in-a-circuit-pk 2025-12-18T00:50:41.122522621Z Solved example: Finding current and voltage in a circuit Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Solved example: Finding current and voltage in a circuit Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/8CNv94fnTnc.mp4/8CNv94fnTnc.mp4 805 Series and Parallel Resistance https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:compound-circuits/e/finding-currents-and-voltages--pure-circuits- 2026-04-07T22:23:57.656416987Z Finding currents and voltages (pure circuits) Let's practice problems involving finding currents and voltages in circuits with pure (series or parallel) combinations of resistors. Satrajit exercise