https://www.khanacademy.org/science/electrical-engineering/introduction-to-ee/intro-to-ee/v/ee-voltage-intuition 2021-03-01T15:43:22Z Voltage Voltage is a cornerstone concept in electricity. We create an intuitive mental image by comparing voltage to gravity. Willy McAllister video https://cdn.kastatic.org/googleusercontent/PPJyTAz0RdJrh4FnPbOPcJSe5ezuIYN5v6EX0Qqb0gms2ucdZNX7NvSCcL2vXRwqSZ4oxHqKcwmwEmMbMLkO-Qw Voltage Voltage is a cornerstone concept in electricity. We create an intuitive mental image by comparing voltage to gravity. https://cdn.kastatic.org/ka-youtube-converted/k9SwNST1eW0.mp4/k9SwNST1eW0.mp4 179 Ohm's law https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-quantities/x0e04e0cb682fb793:resitance/v/circuits-part-1 2024-05-29T15:10:23.071133296Z Ohm's law Ohm's Law is V = IR, where V = voltage, I = current, and R = resistance. Ohm's Law allows you to determine characteristics of a circuit, such as how much current is flowing through it, if you know the voltage of the battery in the circuit and how much resistance is in the circuit. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/b84a04ee-f19e-4ed0-aabf-21b4d0f8b903_1280_720_base.png Ohm's law Ohm's Law is V = IR, where V = voltage, I = current, and R = resistance. Ohm's Law allows you to determine characteristics of a circuit, such as how much current is flowing through it, if you know the voltage of the battery in the circuit and how much resistance is in the circuit. https://cdn.kastatic.org/ka-youtube-converted/F_vLWkkOETI.mp4/F_vLWkkOETI.mp4 587 Ohm's law https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:circuits-oms-kirchhoffs-laws/v/resistivity-and-conductivity 2023-09-10T17:11:17.624018169Z Resistivity and conductivity Let's look at the properties of materials that cause a resistor to resist the flow of current. Explore the principles of Ohm's law, resistance, and resistivity in electrical circuits. Understand how resistance is defined by voltage and current, and how it remains constant in Ohmic materials. Discover the factors that influence resistance, including the length, cross-sectional area, and material of a resistor. David SantoPietro video https://cdn.kastatic.org/googleusercontent/-RlW8oVnlZWWOXxxRFGIP8eQTs9MZL5s5D8ukkvjimXnLYaLbIYOgBrIyt0QZKF69KItib1LU4Ie6iVJcPr2iA_B Resistivity and conductivity Let's look at the properties of materials that cause a resistor to resist the flow of current. Explore the principles of Ohm's law, resistance, and resistivity in electrical circuits. Understand how resistance is defined by voltage and current, and how it remains constant in Ohmic materials. Discover the factors that influence resistance, including the length, cross-sectional area, and material of a resistor. https://cdn.kastatic.org/ka-youtube-converted/4rsswT_Rv1M.mp4/4rsswT_Rv1M.mp4 722 Ohm's law https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-quantities/x0e04e0cb682fb793:resitance/e/factors-affecting-resistance-basic 2023-03-16T00:21:35.099724358Z Factors affecting resistance (basic) Let's practice some problems to better understand how resistance depends on factors related to the dimensions and the material of the conductor. exercise https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-circuits/x0e2f5a2c:circuits-oms-kirchhoffs-laws/e/voltage-and-ohm-s-law-ap1 2026-06-09T01:30:45.805316646Z Applying Ohm's law Practice using Ohm's law to predict changes in electric potential difference, resistance, or current for a circuit component.  April Russell exercise https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:electrical-quantities/x0e04e0cb682fb793:resitance/a/resistance-and-resistivity-ap1 2021-04-29T07:59:27Z Current, resistance, and resistivity review Review the key terms, equations, and skills related to current, resistance, and resistivity, including how to find the current direction and what resistance depends on. article