Help with Last RLC Circuit M/C Question

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SUMMARY

The discussion revolves around a multiple-choice question regarding RLC circuits, specifically addressing the conditions under which instantaneous voltage and current are in phase. The correct answer is that when voltage and current are in phase, the total reactance is zero, which implies that both inductive and capacitive reactance cancel each other out. The conversation also highlights the importance of understanding phase shifts caused by resistance and reactance in RLC circuits.

PREREQUISITES
  • Understanding of RLC circuit components (Resistor, Inductor, Capacitor)
  • Knowledge of phase relationships in AC circuits
  • Familiarity with reactance concepts (Inductive and Capacitive)
  • Basic principles of electrical engineering
NEXT STEPS
  • Study the concept of total reactance in RLC circuits
  • Learn about phase shift effects caused by resistance and reactance
  • Explore the mathematical relationships governing AC circuit behavior
  • Review the principles of impedance in RLC circuits
USEFUL FOR

Students studying electrical engineering, educators teaching circuit theory, and anyone seeking to deepen their understanding of RLC circuit behavior and phase relationships.

HookedOnPhysics
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Hi everyone,
Srry to post a different homework question in your thread here, but tried to start a new topic/thread but for some reason, the system is not letting me.

Here is my question:

It's the last m/c question out of 30 that I am doing tonight, and I'm having a bit of trouble figuring this one out:

Question:
When the instantaneous voltage and current in a RLC circuit are in phase...

Answer Choices are as follows:
A. Inductive Reactance is ZERO.
B. Capacitive Reactance is ZERO.
C. Total Reactance is ZERO.
D. Resistance is ZERO.

If someone can assist me with this last HW problem, I'd really appredciate it. Thanks!

HookedOnPhysics
 
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HookedOnPhysics said:
Hi everyone,
Srry to post a different homework question in your thread here, but tried to start a new topic/thread but for some reason, the system is not letting me.

Here is my question:

It's the last m/c question out of 30 that I am doing tonight, and I'm having a bit of trouble figuring this one out:

Question:
When the instantaneous voltage and current in a RLC circuit are in phase...

Answer Choices are as follows:
A. Inductive Reactance is ZERO.
B. Capacitive Reactance is ZERO.
C. Total Reactance is ZERO.
D. Resistance is ZERO.

If someone can assist me with this last HW problem, I'd really appredciate it. Thanks!

HookedOnPhysics

You should start a thread for this. You are kinda hijacking the other guys thread, but... what causes a phase shift? Does resistance cause a phase shift? Does reactance cause a phase shift?
 
I split this off from the other thread.

That said, to the OP: our policy is that you show some work before we help you...
 

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