Current Attempt in Progress The figure on the left below shows a heterodyne metal detector being used. As the right figure illustrates, this device utilizes two capacitor/inductor oscillator circuits, A and B. Each produces its own resonant frequency, fox - 2 T VLAC and for = 2717. Any difference between these frequencies is detected through earphones as a beat frequency for - foAl. In the absence of any nearby metal object, the inductances LA and LB are the same, and for and for are identical. There is no beat frequency. When inductor B (the search coil) comes near a piece of metal, the inductance LB increases, the corresponding oscillator frequency for decreases, and a beat frequency is heard. Suppose that initially each inductor is adjusted so that LB = LA, and each oscillator has a resonant frequency of 908.0 kHz. Assuming that the inductance of search coil B increases by 1.000% due to a nearby piece of metal, determine the beat frequency heard through the earphones. Oscillator circuit B Oscillator circuit A Additional Additional circuitry circuitry For for LAS oscillator B oscillator A JOB FOR Beat frequency amplifier JOB - FOA Headphones (a) ( b) Number i Units eTextbook and Media