A) \[R=20\Omega ,\,\,L=1.5\,H,C=35\mu F\]
B) \[R=25\Omega ,\,\,L=2.5\,\,H,C=45\mu F\]
C) \[R=15\Omega ,\,\,L=3.5\,\,H,C=30\mu F\]
D) \[R=25\Omega ,\,\,L=1.5\,\,H,C=45\mu F\]
Correct Answer: C
Solution :
(c) \[R=15\Omega ,\,\,L=3.5\,\,H,C=30\mu F\] For better tuning of an LCR circuit used for communication the circuit should possess high quality factor of resonance. i.e., \[Q=\frac{1}{R}\sqrt{\frac{L}{C}}\] should be high. For it R should be low, L should be high and C should be low, therefore combination in option (c) is correct.
You need to login to perform this action.
You will be redirected in
3 sec
