Ammeter Connections for Battery Current Measurement

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Homework Help Overview

The discussion revolves around identifying which diagrams correctly depict an ammeter measuring current through a battery. The subject area includes basic circuit theory and the roles of ammeters and voltmeters in measuring electrical quantities.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the requirement for ammeters to be connected in series and express confusion regarding specific diagrams. Questions are raised about the implications of ideal components, such as the infinite resistance of a voltmeter, and its effect on current readings.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the diagrams. Some guidance has been provided regarding the behavior of ideal voltmeters, but no consensus has been reached on the correct diagrams.

Contextual Notes

Participants are considering the implications of ideal components in their analysis, specifically the assumption that the voltmeter has infinite resistance, which affects current flow in the circuit.

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Homework Statement


In which diagram(s) (labeled A - D) does the ammeter correctly measure the current through the battery?

The Attempt at a Solution



I know that ammeters measure the current in series, and that the voltmeter won't have any effect on its reading, but I'm confused about the digram A

I would say that its image A and D, but I'm not sure how A would work

any help would be appreciated guys !
 

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ok assuming that the voltmeter and ammeter are ideal. The voltmeter will have infinite resistance. What does that mean for a current passing through the voltmeter?
 
ahhh, it'll go down to zero ...thanks !

one more thing, when will the voltmeter read zero ?


i'm thinking since it measures potential between two points it will be zero wherever there is a clear path between the two points: "D" ... sounds right ?
 

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