In the quarter Wheatstone bridge shown assume that R3 is a Piezo resistive STRAINGAUGE the resistance of which increases with applied strain. A) calculate the voltage shown by the voltmeter at a value of strain ɛ which induces a change of +AR3. B) If the Gauge Factor S = 2 derive an expression that relates the output voltage Vo to the applied strain, E

Fig: 1

Fig: 2