Current in an RL Circuit
Claimed by Josh Mathew Fall 2016
This topic describes the current in a RL circuit. An RL circuit includes a resistor (R) and inductor (L). Thus it is apart of the Inductor circuits along with the LC circuit. This is powered through a voltage or current. A common use of the RL circuit is to DC power supplies to RF amplifiers.
The Main Idea
RL circuits essentially just include a resistor and inductor. An inductor is a mechanism that essentially able to store energy in a magnetic field. Inductors are useful because they can help reduce resistance especially in A.C. However in a DC, an inductor is a stable resistor. A resistor is device that regulates the current in a circuit. They can also be used to create a specific voltage. The RL circuit can be used in either parallel or series and they can be used as a low or high passive filters. The difference between the two is that a low passive filter lets frequencies below the threshold to pass. A high pass filter allows frequencies greater than the threshold to pass.
Included in a RL circuit is Impedance, which is the "effective" resistance within an electrical circuit. This impedance is frequency dependent as well.
In order to figure out the current in a RL circuit we must first have a series of proofs that includes the resistance, inductance, and emf of the battery.
A Mathematical Model
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A Computational Model
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Examples
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See also
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References
Matter & Interactions 4th Edition: Electric and Magnetic Interactions