Question

A $15\Omega$ resistor, a $220\mu$H coil, and a $60pF$ capacitor are in series across an ac source. What is the bandwidth of the circuit?

• A. $138MHz$
  
• B. $10,866Hz$
  
• C. $1,907Hz$
  
• D. $138kHz$
  

Answer 1

The correct option is B $10,866Hz$

As per formula in a LCR circuit $BW=\dfrac{R}{2\pi\timesL}$.

Here L and R is given.So,

$BW=\dfrac{15}{440\pi\times10^{-6}}=10851.5Hz $.

This value is close to option B.