# Which of the following combinations should be selected for better tuning of an L-C-R circuit used for communication? Option 1) R = 20 ,  L = 1.5 H,  C = 35 F Option 2) R = 25 ,  L = 2.5 H,  C = 45 F Option 3) R = 15 ,  L = 3.5 H,  C = 30 F Option 4) R = 25 ,  L = 1.5 H,  C = 45 F

As we learnt in

Q factor - - wherein

L - inductance

C - capacitance

Quality factor of L-C-R circuit     Clearly, Q is maximum of Q1 , Q and Q4

i.e for Q to be high, L should be high and C should be low.

Option 1)

R = 20 ,  L = 1.5 H,  C = 35 F

this is the incorrect option

Option 2)

R = 25 ,  L = 2.5 H,  C = 45 F

this is the incorrect option

Option 3)

R = 15 ,  L = 3.5 H,  C = 30 F

this is the correct option

Option 4)

R = 25 ,  L = 1.5 H,  C = 45 F

this is the incorrect option

### Preparation Products

##### Rank Booster NEET 2021

This course will help student to be better prepared and study in the right direction for NEET..

₹ 13999/- ₹ 9999/-
##### Knockout NEET May 2021

An exhaustive E-learning program for the complete preparation of NEET..

₹ 22999/- ₹ 14999/-
##### Knockout NEET May 2022

An exhaustive E-learning program for the complete preparation of NEET..

₹ 34999/- ₹ 24999/-
##### Test Series NEET May 2021

Take chapter-wise, subject-wise and Complete syllabus mock tests and get in depth analysis of your test..

₹ 6999/- ₹ 4999/-