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  1. 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:

  2. Cells with internal resistances: Worked example - Khan Academy

    [Laughter] let's solve some problems with cells connected to a simple circuit so the first one we have a cell with emf 10 volt it has an internal resistance of two ohms and it's connected to a …

  3. Electricity | NCERT Physics Class 10 | Science | Khan Academy

    Solving a circuit with series and parallel resistors Learn Example: Analyzing a more complex resistor circuit Solved example: Finding current and voltage in a circuit

  4. 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. Created by Mahesh Shenoy.

  5. Free Math Worksheets - Khan Academy Blog

    Mar 15, 2021 · Biology teacher, Houston, TX Is Khan Academy free? Khan Academy’s practice questions are 100% free—with no ads or subscriptions. What do Khan Academy’s interactive …

  6. 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.

  7. Resistors in parallel (video) | Khan Academy

    Current is the flow of electrons though the wires. A single electron can only be in one place at a time so when it gets to the split it has to go one way or the other, this is why current splits.

  8. Kirchhoff's law application: 2-loop circuit solving - Khan Academy

    Let's apply Kirchhoff's voltage law and Kirchhoff's current law in solving a two-loop circuit! KCL states that the total current entering a node = total current exiting a node, charge conservation!

  9. 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 …

  10. Current through resistor in parallel: Worked example

    How to calculate the current through a resistor in parallel using equivalent resistance and Ohm's law.