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  1. Global winds and currents (article) | Khan Academy

    As prevailing winds blow across the ocean, they create surface currents in the water. Both prevailing winds and surface currents appear to curve due to Earth's rotation. This is known as the Coriolis …

  2. Electric current (video) | Getting started | Khan Academy

    Current is the flow of charge. Copper and silver atoms have loose electrons, making them good conductors. Current is measured by counting charges passing through a boundary per second. It …

  3. Current, resistance, and resistivity review - Khan Academy

    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.

  4. Basic electrical quantities: current, voltage, power

    Current is the rate of flow of charge, and voltage measures the energy transferred per unit of charge. We can insert these definitions into the equation for power:

  5. Global wind patterns (video) | Khan Academy

    This process, involving rising hot air and sinking cool air, creates convection cells and prevailing winds that distribute heat and moisture unevenly across the globe, shaping diverse biomes and determining …

  6. Intro to current (& Amperes) (video) | Khan Academy

    Let's explore what electric current is, how we calculate it, and it's unit (Amperes) and it's direction.

  7. Unit of charge (Coulombs) (video) | Khan Academy

    Let's explore what the unit of electric charge (Coulombs is) . Created by Mahesh Shenoy.

  8. Ohm's law (video) | Current electricity | Khan Academy

    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 …

  9. Conventional current direction (video) | Khan Academy

    Now current is the amount of energy that actually goes into that circuit, from the starting voltage to the resistance. Remember, resistance is measured in Ohms and voltage in volts, and current in amps or …

  10. Mesh current method (step 4) (video) | Khan Academy

    The Mesh Current Method is a procedure for analyzing a circuit with multiple loops or meshes. The method is based on using KVL for each loop or mesh to generate a system of independent equations.