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An oscillating circuit consists of a cap...

An oscillating circuit consists of a capacitor of capacitance `C` and a solenoid with inductance `L_(1)`. The solenoid is inductively connected with a short`-` circuited coil having an inductance `L_(2)` and a negligible active resistance. Their mutual inductance coefficient is eqaul to `L_(12)`. Find the natural frequency of the given oscillating ciruit.

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