In the absence of a nearby metal object

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In the absence of a nearby metal object, the two inductancesLA and LB in a heterodynemetal detector are the same, and the resonant frequencies of thetwo oscillator circuits have the same value of 500 kHz. When thesearch coil (inductor B) is brought near a buried metal object, abeat frequency of 4.3 kHz is heard. By what percentage does theburied object reduce the inductance of the search coil?

Reference no: EM13646908

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