Which of the following combination should be selected for better tuning of an LCR circuit used for communication?

Options

A. R=20`Omega`,L1.5H, C=35`muF`
B. `R=25Omega,L=2.5H,C=45muF`
C. `R=15Omega,L=3.5H,C=30muF`
D. `R=25Omega,L=1.5H,C=45muF`

Answer

C

Explanation

For better tuning quality factor should be high
`Q=(1)/(R)sqrt((L)/(C))`
for `Q_("max")`, R should be least
`therefore` Best answer is
`R=15Omega,L=3.5H,C=30muF`