3. A Wheatstone bridge is formed by 1 strain gauge (R1) and three resistors (R2, R3, and R4). The initial resistance of all of them are the same 120 Ohm. The gauge factor of the strain gauge is 1.5. The applied voltage (Ei) on the Wheatstone bridge is 10 V. Initially, the bridge is balanced. After the strain gauge deforms, the bridge output (E0) is measured as 10 mV. What is the strain?
Added by Taylor G.
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First, we need to calculate the resistance of the strain gauge after deformation. We know that the gauge factor is 1.5, which means that the resistance of the strain gauge changes by 1.5 times the original value. Therefore, the new resistance of the strain gauge Show more…
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