Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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The figure below shows a Wheatstone bridge, a circuit used to precisely measure an unknown
resistance R by varying Rvar until the ammeter reads zero current and the bridge is said to be
"balanced".
9.00 V
9.00 Ω
Rvar
ww
www
If the bridge is balanced with Ryar = 27.0 2, find
the value of the unknown resistance R.
A
3.00 Ω
R
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Transcribed Image Text:The figure below shows a Wheatstone bridge, a circuit used to precisely measure an unknown resistance R by varying Rvar until the ammeter reads zero current and the bridge is said to be "balanced". 9.00 V 9.00 Ω Rvar ww www If the bridge is balanced with Ryar = 27.0 2, find the value of the unknown resistance R. A 3.00 Ω R
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