RLC circuit, need some help with the intuition behind inductors.

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Homework Help Overview

The discussion revolves around an RLC circuit problem, specifically focusing on the behavior of an inductor immediately after a switch is closed. Participants are trying to understand why a voltmeter connected across the inductor reads zero volts, despite the expectation that an induced emf would result in a measurable voltage.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are questioning the conditions under which the voltmeter reads zero volts, with some confusion about the role of the inductor and the induced current. There is a discussion about whether the switch being open or closed affects the readings, and one participant expresses uncertainty about the inductor's behavior in the circuit.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the problem. Some have offered thoughts on the inductor's behavior and its effect on voltage readings, while others are seeking confirmation of their reasoning. There is no explicit consensus yet, but the dialogue is productive in examining the underlying concepts.

Contextual Notes

Participants express a lack of confidence in their understanding of circuits and the behavior of inductors, indicating a need for clearer insights into these concepts. The original poster has provided a visual aid, which may be relevant to the discussion but is not described in detail.

theBEAST
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Homework Statement


I attached a picture of a sample problem that I was confused about. What I don't understand is why the V2 voltmeter would read 0 volts (according to the answer key). This is because I thought that an inductor produces an induced emf and current. So wouldn't the voltmeter read a negative value instead of zero?

Edit: immediately after the switch is closed.
 

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Are they asking about when the switch is off?
 
Rayquesto said:
Are they asking about when the switch is off?

Oops, immediately after the switch is closed.
 
I am very weak at circuits and I wish my physics II teacher could gives us better insight to this stuff, however, here is a thought: Initial charge goes from high potential, but when it hits the inductor, the induced current is supposed to oppose it right? So, it never actually gets through that part of the circuit and so the voltage does read anything it goes through it right? I mean, can you back me up on this one if you feel this is completely wrong?
 
theBEAST said:

Homework Statement


I attached a picture of a sample problem that I was confused about. What I don't understand is why the V2 voltmeter would read 0 volts (according to the answer key). This is because I thought that an inductor produces an induced emf and current. So wouldn't the voltmeter read a negative value instead of zero?

Edit: immediately after the switch is closed.
The voltmeter will not read negative.

What are your answers for the other meters after the switch is closed? Explain your reasoning behind each answer.
 

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