Electro Magnetic Induction And Alternating Currents Question 17
Question: An ac circuit consists of an inductor of inductance 0.5 H and a capacitor of capacitance 8 mF in series. The current in the circuit is maximum when the angular frequency of ac source is [CPMT 1986]
Options:
A) 500 rad/sec
B) 2 ´ 105 rad/sec
C) 4000 rad/sec
D) 5000 rad/sec
Show Answer
Answer:
Correct Answer: A
Solution:
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
