Current, Power, and Energy problem

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Homework Help Overview

The discussion revolves around a problem related to current, power, and energy in a circuit, specifically involving the application of Kirchhoff's rules. Participants are exploring the setup and calculations associated with a circuit that includes a 12-V battery.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants are attempting to apply Kirchhoff's rules to analyze the circuit. There are questions about the initial setup, including whether two loops are necessary. Concerns are raised regarding the calculated power delivered by the battery, with some participants questioning the validity of the results for parts b) and c).

Discussion Status

The discussion is ongoing, with some participants providing guidance on using Kirchhoff's rules. There is a mix of confidence in certain parts of the problem, while others express uncertainty about specific calculations. Multiple interpretations of the circuit analysis are being explored.

Contextual Notes

Participants are navigating potential complications in analyzing the circuit, particularly regarding the impact of resistor R1 on current measurements. There is a noted concern about the accuracy of the power calculation associated with the battery.

caddyguy109
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Okay, here's the problem:
http://www.ihostphotos.com/show.php?id=174911"

Already did it once, but then I realized my "method" :rolleyes: looked good, but wasn't correct. Is there two loops for this problem, to start, or what? I get the formulas and the laws, but something is throwing me as to starting it.
 
Last edited by a moderator:
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Okay, now this one is the RIGHT thread:wink:
 
Last edited:
Anybody?
 
Use Kirchoff Rules.
 
Okay, did that. Only problem was when I got to b) and c), since the power I calculated as being deilvered by the 12-V battery seems WAY too big (132W).

Take a look:
Part a)
http://www.ihostphotos.com/show.php?id=175479"

And then Parts b) and c) (where I may have slipped up):
http://www.ihostphotos.com/show.php?id=175481"
 
Last edited by a moderator:
Is it right?
 
ANYBODY think it looks correct? I'm confident on the first part, but just wondering about my answers to parts b) and c).
 
Yes, i see no problem with it.
 
Okay, thanks!
 
  • #10
caddyguy109 said:
Is it right?
It is a little complicated to analyse this circuit but your answer cannot be right. Without R1 the current through the ammeter would be 5 amps. With R1 the current will be less.

AM
 
  • #11
Hmm...then what should I do differently?
 

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