A coil of resistance $15 \Omega$ and inductance 1 H is connected in parallel with a capacitor of $25 \mu \mathrm{~F}$. Compute the frequency at which the circuit will behave as a non-inductive resistance of $R$ ohms. Find also the value of $R$ ?
Explanation
The circuit will behave as a non-inductive resistance when the reactance of the capacitor is equal to the reactance of the inductor. This occurs when the frequency is equal to the resonant frequency of the circuit.
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