Effective Current Impedance Calculation without Inductive Coupling

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Homework Help Overview

The problem involves calculating the impedance and effective current in an electrical circuit without considering inductive coupling. The context includes parameters such as resistance, inductance, and capacitance, with a sinusoidal voltage source provided.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the calculation of impedance, noting that it should be treated as a complex value rather than just a magnitude. Questions arise regarding the ambiguity of the problem without a circuit diagram, and the need for clarification on inductive coupling is highlighted.

Discussion Status

The discussion is ongoing, with participants providing insights into the nature of impedance and the implications of ignoring inductive coupling. There is an acknowledgment of the need for a circuit diagram to clarify the problem further, and some guidance has been offered regarding the treatment of impedance as a complex quantity.

Contextual Notes

Participants note the absence of a circuit diagram and the potential ambiguity in the problem statement, which may affect the interpretation of the exercise. The original poster mentions the need to rephrase the problem for clarity.

radicaled
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The exercise goes like this:
- Obtain the impedance
- Current effective without inductive coupling

Data:
v(t) = 100 sin(1000t + π/3)
R = 1kΩ
L1 = L2 = 1H
C= 1μC

Resolution:
[itex]Z = \sqrt{R^2 + (Xl - Xc)^2}[/itex]
[itex]Z = \sqrt{1000^2 + (1000.2 - \frac{1}{1000 1x10^{-6}})^2}[/itex]
[itex]Z = 1414,21[/itex]Ω

Now, what is the inductive coupling
 
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Without a circuit diagram the question is ambiguous. Can you provide a circuit diagram and the original problem statement?
 
Ok, I have attached the circuit.
As for the problem statement its the same. I may rephrase, because I have to translate it
- Obtain the impedance
- The effective current without inductive coupling
 

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You've calculated a magnitude for the impedance, but the impedance itself will be a complex value (real and imaginary parts). You can find the magnitude of the current that flows by treating the impedance magnitude as though it were a simple resistance. Note that this will not provide current phase information (with respect to the applied voltage, which as you should note, has its own specified phase). For the phase information you will have to use the complex impedance and perform the calculation using complex arithmetic.

Inductive coupling is the interaction of inductors that share a mutual magnetic field; current in one inductor induces a current in the other, and vice-versa. Apparently you're asked to ignore such a coupling in this problem.
 

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