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



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