The inductance of a coil is measured using the bridge shown in the figure. Balance (D = 0) is obtained with C1=1nF,R1=2.2MΩ,R2=22.2kΩ,R4=10kΩ. The value of the inductance Lx (in mH) is
222
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Solution
The correct option is A 222 In the given bridge circuit,
Z1=R11+jωC1R1
Z2=R2
Z3=Rx+jωLx
Z4=R4
(2) balance product of impedance of opposite arms are equal.