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The equivalent circuit of a quartz crystal has LCR arm capacitance of 12nF and inductance of 3mH and parallel arm capacitance of 4nF. Parallel resonant frequency for the circuit is:

The equivalent circuit of a quartz crystal has LCR arm capacitance of 12nF and inductance of 3mH and parallel arm capacitance of 4nF. Parallel resonant frequency for the circuit is: Correct Answer 3 MHz

The parallel resonant frequency of a crystal oscillator is given by 1/√(LCₒC/(Cₒ+C)). Substituting the given values in the equation, the parallel resonant frequency is found to be 3 MHz.

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