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Wheatstone bridge ?

 
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Mar19-08, 03:44 AM   #1
 

Wheatstone bridge ?


1. The problem statement, all variables and given/known data

Will the balancing condition get modified in Wheatstone bridge if AC source is used instead of a battery ?


2. Relevant equations



3. The attempt at a solution
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Mar19-08, 10:48 AM   #2
 
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No, but if you use a galvanometer (as is usual) as a detector, it wouldn't move.
You would need an AC meter, which probably woudn't be as sensitive as a galvanometer.
Mar22-08, 12:43 AM   #3
 
Quote by clem View Post
No, but if you use a galvanometer (as is usual) as a detector, it wouldn't move.
You would need an AC meter, which probably woudn't be as sensitive as a galvanometer.
A hot wire galvanometer would also work-- if you could find them.

In fact, instruments are made that are AC bridges. Select a frequency, amplitude and the spieces of impedence, inductance, ESR and so forth, that you want numbers for, and they display the effective values.
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