Electro Magnetic Induction And Alternating Currents Question 51
Question: A series ac circuit consist of an inductor and a capacitor. The inductance and capacitance is respectively 1 henry and $ 25\mu F. $ If the current is maximum in circuit then angular frequency will be [RPMT 1999]
Options:
A) 200
B) 100
C) 50
D) 200/2 $ \pi $
Show Answer
Answer:
Correct Answer: A
Solution:
Current in LC circuit becomes maximum when resonance occurs.
So $ \omega =\frac{1}{\sqrt{LC}}=\frac{1}{\sqrt{1\times 25\times {{10}^{-6}}}}=\frac{1000}{5}=200,rad/\sec $
