Say I have two Wheatstone bridge circuits: On each of them, the top half of the diamond is formed using two fixed resistors. The bottom half of each diamond consists of a variable resistor on the left and a resistance temperature detector on the right. Now, for the first bridge circuit, the two fixed resistors are each 100 ohms, while for the second, they are 25 ohms. Both bridges operate in balanced bridge mode.(adsbygoogle = window.adsbygoogle || []).push({});

Which bridge circuit has the greater static sensitivity?

I know that the bridge is balanced when the ratio of the two top resistors equals the ratio of the two bottom resistors... but this equals 1 in both cases.

My guess is that the lower resistance bridge circuit is more sensitive to changes in voltage, so then it would be the obvious choice. Can anyone confirm this?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Wheatstone bridges

**Physics Forums | Science Articles, Homework Help, Discussion**