Q. A circuit consists of an inductance of 0.5 mH and a capacitor of $20\mu F$. The frequency of the L – C oscillations is approximately
A) 400 Hz
B) 88 Hz
C) 1600 Hz
D) 2400 Hz
Explanation
(c) $f = \frac{1}{2\pi\sqrt{LC}}$
$\therefore\ \ f = \frac{1}{2 \times 3.14\sqrt{0.5 \times 10^{- 3} \times 20 \times 10^{- 6}}}$
$= \frac{1}{2 \times 3.14 \times 10^{- 4}} \approx 1600\ Hz$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.