Resistors*: Difference between revisions
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===A Mathematical Model=== | ===A Mathematical Model=== | ||
Resistance can be modeled by starting at the fundamental concept <math>{I = |\bar{q}|nA\bar{v}}<\math> where I is conventional current, q is the magnitude of the charge being carried, n is the number of charge carriers, A is the area of the resistor, and v is the drift speed of the charge. | |||
<math>{I = |q|nA\bar{v} = |q|nAuE} | |||
===A Computational Model=== | ===A Computational Model=== | ||
Revision as of 12:59, 17 April 2016
claimed by Benjamin Flamm
Resistors are elements that are inserted into circuits in order to oppose the flow of current. This page gives examples of computing resistance as well as the history, applications, and evolution of resistors.
The Main Idea
Resistors have many forms throughout modern technology and are applied in electronic industries ranging from basic manufacturing (lightbulbs, portable devices, etc.) to advanced biomedical instrumentation such as electrocardiogram devices. (electronicdesign.com)
The primary goal of a resistor is to limit the current that flows through a circuit. For example, a lightbulb is a very simple application of Tungsten or another material that has a high resistance. As electrons flow into the lightbulb, they begin to collide with themselves and the high number of charge carriers in the high-resistance filament. The result of these collisions is energy released as light and heat. See the Mathematical Model section for the relationship of these factors and how they determine resistance.
A Mathematical Model
Resistance can be modeled by starting at the fundamental concept <math>{I = |\bar{q}|nA\bar{v}}<\math> where I is conventional current, q is the magnitude of the charge being carried, n is the number of charge carriers, A is the area of the resistor, and v is the drift speed of the charge.
<math>{I = |q|nA\bar{v} = |q|nAuE}
A Computational Model
How do we visualize or predict using this topic. Consider embedding some vpython code here Teach hands-on with GlowScript
Examples
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Simple
Middling
Difficult
Connectedness
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History
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See also
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Further reading
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References
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