A parallel tank circuit operating at its resonant frequency has an impedance of 10,000 Ω . At the points on either side of the resonant frequency that define the bandwidth, the impedance is approximately _____.
A) 6,000 Ω
B) 7,070 Ω
C) 10,140 Ω
D) 15,000 Ω

Question

Quizplus · Accepted Answer

At the points defining the bandwidth in a parallel resonant circuit, the impedance drops to 70.7% of its maximum value at resonance. Given a resonant impedance of 10,000 Ω, 70.7% of this is approximately 7,070 Ω.

A Parallel Tank Circuit Operating at Its Resonant Frequency Has