https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:current-resistivity-ohms-law/v/ee-kirchhoffs-current-law 2021-02-22T19:49:34Z Kirchhoff's current law Kirchhoff's Current Law says the currents flowing into a node must add up to zero. Willy McAllister video https://cdn.kastatic.org/googleusercontent/V845j2s6nZJ4klE3t-zRWKCmXNWcmAwT_4BugrDlgltyVzve2MCzjCqeKkrvK7sqxpFr-GMd2qQ1gBep03-E9kzl Kirchhoff's current law Kirchhoff's Current Law says the currents flowing into a node must add up to zero. https://cdn.kastatic.org/ka-youtube-converted/OYerdzZPSI0.mp4/OYerdzZPSI0.mp4 363 Kirchhoff’s laws and applications in electric circuits https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:current-resistivity-ohms-law/v/ee-kirchhoffs-voltage-law 2021-02-22T19:49:33Z Kirchhoff's voltage law Kirchhoff's Voltage Law says if you travel around any loop in a circuit, the voltages across the elements add up to zero. Willy McAllister video https://cdn.kastatic.org/googleusercontent/YmeBi0ngxmr1s_QkA4WhTmU5GQ7PwV6N1giU7arJWCu9CJX02987w4bsLSguUecjDfzjUfYkVgiOUar_zIhqIDM Kirchhoff's voltage law Kirchhoff's Voltage Law says if you travel around any loop in a circuit, the voltages across the elements add up to zero. https://cdn.kastatic.org/ka-youtube-converted/Bt6V7D5av9A.mp4/Bt6V7D5av9A.mp4 410 Kirchhoff’s laws and applications in electric circuits https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:current-resistivity-ohms-law/a/ee-kirchhoffs-laws 2026-04-06T14:45:37.43409783Z Kirchhoff's laws Kirchhoff's Laws describe current in a node and voltage around a loop. These two laws are the foundation of advanced circuit analysis. article https://www.khanacademy.org/science/grade-11-physics-snc-aligned/x1d0fed5276339e80:basic-electrical-concepts-and-circuit-analysis/x1d0fed5276339e80:kirchhoffs-laws-and-applications-in-electric-circuits/v/series-resistors 2025-05-29T03:26:36.512371402Z Series resistors Let's understand Series resistors! Dubverse video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Series resistors Let's understand Series resistors! https://cdn.kastatic.org/ka-youtube-converted/BlOtRNZxuvU.mp4/BlOtRNZxuvU.mp4 717 Kirchhoff’s laws and applications in electric circuits 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/electrical-engineering/ee-circuit-analysis-topic/ee-resistor-circuits/v/ee-parallel-resistors-1 2024-05-29T16:06:43.117180208Z Parallel resistors (derivation) Discover the fascinating world of parallel resistors in electrical circuits! Learn how to identify parallel resistors, understand the concept of shared nodes and voltage, and apply Ohm's law to calculate equivalent resistance. Master the formula for parallel resistors and enhance your circuit analysis skills with real-life examples. Willy McAllister video https://cdn.kastatic.org/googleusercontent/oeBG2M2RDWwN3HrfIOPuhGJ0v85VnioF9-_BgOb3Z_0eh6URgM3vk-G91sLneaXzZHQHQPqVUF7W5rJm9pDE1bCAYA Parallel resistors (derivation) Discover the fascinating world of parallel resistors in electrical circuits! Learn how to identify parallel resistors, understand the concept of shared nodes and voltage, and apply Ohm's law to calculate equivalent resistance. Master the formula for parallel resistors and enhance your circuit analysis skills with real-life examples. https://cdn.kastatic.org/ka-youtube-converted/MHADYILlW1E.mp4/MHADYILlW1E.mp4 668 Kirchhoff’s laws and applications in electric circuits https://www.khanacademy.org/science/electrical-engineering/ee-circuit-analysis-topic/ee-resistor-circuits/v/ee-parallel-resistors-2 2024-05-29T16:28:55.138729878Z Parallel resistors (derivation continued) Learn how to calculate the equivalent resistance for multiple parallel resistors. This method simplifies complex resistor networks by replacing them with a single equivalent parallel resistor, streamlining circuit analysis and improving efficiency. Grasp the concept of current splitting among resistors and understand that all parallel resistors share the same voltage, making this technique applicable to various electrical engineering scenarios. Willy McAllister video https://cdn.kastatic.org/googleusercontent/AJYVjF6SLWx5J5WoM-tR6mxIBRlbYdawett10QzoWzPI8gF1hemSLU_wO7HaTK3mgCPcUfoKqpo8FppPv9A4GVPd Parallel resistors (derivation continued) Learn how to calculate the equivalent resistance for multiple parallel resistors. This method simplifies complex resistor networks by replacing them with a single equivalent parallel resistor, streamlining circuit analysis and improving efficiency. Grasp the concept of current splitting among resistors and understand that all parallel resistors share the same voltage, making this technique applicable to various electrical engineering scenarios. https://cdn.kastatic.org/ka-youtube-converted/0IeWoAiHbAY.mp4/0IeWoAiHbAY.mp4 255 Kirchhoff’s laws and applications in electric circuits https://www.khanacademy.org/science/electrical-engineering/ee-circuit-analysis-topic/ee-resistor-circuits/a/ee-parallel-conductance 2025-06-30T13:24:56.290137498Z Parallel conductance Conductance is the reciprocal of resistance. The unit of conductance is the siemens (S). You can analyze parallel resistors by describing each resistor as a conductance. article https://www.khanacademy.org/science/electrical-engineering/ee-circuit-analysis-topic/ee-resistor-circuits/e/skill-check--identifying-series-and-parallel-resistors 2026-04-07T22:23:57.656416987Z Series and parallel resistors Identify series and parallel resistors in a circuit setting Willy McAllister exercise 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 Kirchhoff’s laws and applications in electric circuits 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/up-class-12-physics/x0958a876c1afdc76:electric-current/x0958a876c1afdc76:wheatstone-bridge/e/wheatstone-bridge-concept-and-application 2026-04-07T23:17:37.123726494Z Wheatstone bridge: concept and application Let's practice some problems to better understand the principle and working of the Wheatstone bridge. exercise