The correct answer is B. as a filter circuit as it rejects a small band of frequencies near the resonant frequency.
A parallel resonant circuit consists of an inductor (L) and a capacitor (C) connected in parallel. At the resonant frequency, the reactance of the inductor and the reactance of the capacitor cancel each other out, resulting in a minimum impedance. This means that at the resonant frequency, the circuit behaves as a filter, allowing only the frequencies close to the resonant frequency to pass through with minimum resistance.
At frequencies above and below the resonant frequency, the impedance of the circuit increases, effectively rejecting those frequencies. This characteristic makes parallel resonant circuits useful as filter circuits, allowing them to pass a specific band of frequencies near the resonant frequency while attenuating or rejecting frequencies outside that range.
Option A is incorrect because a parallel resonant circuit does not have zero impedance; rather, it has a minimum impedance at the resonant frequency.
Option C is incorrect because a parallel resonant circuit does not accept a small band of frequencies. It selectively allows a small band of frequencies to pass through while rejecting others.
Option D is incorrect because a parallel resonant circuit does not draw maximum current. The current in a resonant circuit is determined by the impedance and the applied voltage, and it is at its maximum at the resonant frequency, but it is not the maximum current that can be drawn by a circuit in general.
