A 12 Ω resistor, a 40 µF capacitor, and an 8 mH coil are in series across an ac source. The resonant frequency is

A 12 Ω resistor, a 40 µF capacitor, and an 8 mH coil are in series a

1.	A 12 Ω resistor, a 40 µF capacitor, and an 8 mH coil are in series across an ac source. The resonant frequency is
A.	28.1 Hz
B.	281 Hz
C.	2,810 Hz
D.	10 kHz
Answer» C. 2,810 Hz