Wheatstone Bridge

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Homework Statement


I think I got part A. I'm complete lost with b -d and help would be great


Homework Equations



https://www.physicsforums.com/attachment.php?attachmentid=10986&d=1190644998

The Attempt at a Solution


It think part d is ∆V = [(∆R1 - ∆R2 + ∆R3 –∆R4 ) / 4R ] * Vo But I'm not sure



Homework Equations





The Attempt at a Solution

 
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Answers and Replies

  • #2
Astronuc
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See if this explanation helps - http://en.wikipedia.org/wiki/Wheatstone_bridge

In parts b-d, R4 = R + [itex]\Delta R[/itex], and R1 = R2 = R3.

Find an expression for V0 in terms of R1, R2, R3 and R4, then substitute in the appropriate values.

In part d, one is looking for how much V0 changes as [itex]\Delta R[/itex] changes.
 

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