Question

An ac circuit consists of an inductor of inductance 0.5 H and a capacitor of capacitance 8 μF in series. The current in the circuit is maximum when the angular frequency of ac source i

• A. 500 rad/sec
• B. 2 × 10⁵ rad/sec
• C. 4000 rad/sec
• D. 5000 rad/sec

Answer 1

Answer: (A)

500 rad/sec

Answer 2

Current will be maximum at the condition of resonance. So resonant frequency

$\omega_{0} = \frac{1}{\sqrt{LC}} = \frac{1}{\sqrt{0.5 \times 8 \times 10^{- 6}}}$= 500 rad/s