Question

In the following circuit the values of $L,C,R$ and $E_0$ are 0.01 H, ${10}^{-5}F,25\Omega$ and 220 volt respectively. The value of current flowing in the circuit at $f=0$ and $f=\infty$ will respectively be

• A. 8 $A$ and 0 $A$
• B. 0 $A$ and 0 $A$
• C. 8 $A$ and 8 $A$
• D. 0 $A$ and 8 $A$

Answer 1

The correct option is B 0 $A$ and 0 $A$

$I=\frac{220}{25+j(.01\times 2\pi f-\frac{1}{{10}^{-5}2\pi f})}$

$I=0$ at $f=0$

$I=0$ at $f=\infty$