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Circuit Connections
Circuit Symbols and Circuit Diagrams Thus far, this unit of The Physics Classroom tutorial has…
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Power Revisited
The previous section of Lesson 3 elaborated upon the dependence of current upon the electric…
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Ohm’s Law
There are certain formulas in Physics that are so powerful and so pervasive that they…
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Resistance
An electron traveling through the wires and loads of the external circuit encounters resistance. Resistanceis the hindrance…
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Electrical Resistance
Journey of a Typical Electron As mentioned in Lesson 1, an electrochemical cell supplies energy to…
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Common Misconceptions Regarding Electric Circuits
In these first two lessons of the Circuits unit of The Physics Classroom, an effort…
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Power: Putting Charges to Work
Electric circuits are designed to serve a useful function. The mere movement of charge from…
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Requirements of a Circuit
Suppose that you were given a small light bulb, an electrochemical cell and a bare…
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Electric Current
What is an Electric Circuit? In Lesson 1, the concept of electric potential difference was…
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Electric Potential Difference
In the previous section of Lesson 1, the concept of electric potential was introduced. Electric potential…