1.

The series RLC circuit, \(\rm R = 2k{\rm{\Omega }},\ L = 1H,C = \frac{{1}}{{400}}\mu F\). Resonant frequency is ?

A. 2 × 104 Hz
B. (1/π)× 104 Hz
C. 104 Hz
D. 2π × 104 Hz
Answer» C. 104 Hz


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