Ammeter Connections for Battery Current Measurement

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The discussion focuses on identifying which diagrams (A-D) correctly show an ammeter measuring battery current. Participants agree that ammeters must be connected in series to measure current accurately. There is confusion regarding diagram A, with some suggesting it may not function as intended. The role of the voltmeter is also discussed, particularly its infinite resistance leading to zero current flow through it. The conclusion is that the voltmeter will read zero when there is a clear path between its measurement points, as illustrated in diagram D.
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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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