2. A resonant circuit has a lower critical frequency of 7 kHz and an upper critical frequency of 13 kHz. The bandwidth of the circuit is
A. 6 kHz
B. 20 kHz
C. 7 kHz
D. 13 kHz
2. A resonant circuit has a lower critical frequency of 7 kHz and an upper critical frequency of 13 kHz. The bandwidth of the circuit is
A. 6 kHz
B. 20 kHz
C. 7 kHz
D. 13 kHz