A differential push-pull type capacitive displacement sensor (normal capacitance C0 = 0.01 μF) is connected in two adjacent arms of an ac bridge in such a way that the output voltage of the bridge is independent of the frequency of the supply voltage. Supply to the bridge is 1 V at 1 kHz. and two equal resistances (R = 3.9 kΩ) are placed in the other two arms of the bridge. The bridge sensitivity is

A differential push-pull type capacitive displacement sensor (normal c

1.	A differential push-pull type capacitive displacement sensor (normal capacitance C0 = 0.01 μF) is connected in two adjacent arms of an ac bridge in such a way that the output voltage of the bridge is independent of the frequency of the supply voltage. Supply to the bridge is 1 V at 1 kHz. and two equal resistances (R = 3.9 kΩ) are placed in the other two arms of the bridge. The bridge sensitivity is
A.	0.001 mV/pF
B.	0.05 mV/pF
C.	0.1 mV/pF
D.	0.5 mV/pF
Answer» C. 0.1 mV/pF