LR circuit in parallel, need someone to check answer

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SUMMARY

The discussion focuses on analyzing an LR circuit with a perfect inductor and resistors in parallel. The user attempts to derive the currents i1 and i2 at t=0 and as t approaches infinity using the formula I(t) = (V/R)(1 - e^(-Rt/L)). For t=0, i1 is confirmed as 0, while i2 is calculated as E/(R0 + R2). The conversation highlights the importance of considering the inductor's behavior during transient states and the need to apply Kirchhoff's laws for accurate analysis.

PREREQUISITES
  • Understanding of LR circuits and their transient behavior
  • Familiarity with Kirchhoff's laws for circuit analysis
  • Knowledge of Thevenin's Theorem for simplifying circuits
  • Ability to manipulate exponential functions in circuit equations
NEXT STEPS
  • Study the application of Kirchhoff's laws in RL circuits
  • Learn about Thevenin's Theorem and its practical applications
  • Explore the transient response of RL circuits in detail
  • Investigate the behavior of inductors in DC circuits over time
USEFUL FOR

Electrical engineering students, circuit designers, and anyone studying transient analysis in electrical circuits.

  • #31
what is Thevenin equivalent emf?
 
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  • #32
2nafish117 said:
what is Thevenin equivalent emf?
Back in post #18 , gneill posted the following.

gneill said:
That's where Thevenin's Theorem comes in. You should have covered Thevenin and Norton equivalent circuits in circuit analysis prior to the introduction of inductor and capacitor components.

You want to remove the inductor from the circuit and replace the remaining voltage source and resistor network with a Thevenin equivalent circuit. It will consist of a voltage source and a single resistor. Those are your "E~" and "R~". Then when the inductor is re-inserted you have a simple series RL circuit to analyze.

Here is a link to the Wikipedia entry for Thevenin's[/PLAIN] Theorem .
 
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