Question

pd-
The selectivity of a series LCR a.c. circuit is large, when
(a) L is large and R is large
(b) L is small and R is small
(c) L is large and R is small (d) L = R​

Answer 1

Answer:

according to my thinking

option d is correct

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Answer 2

The selectivity of the LCR a.c circuit is large, when L is large and R is small (c).

Explanation:

• The selectivity of the LCR circuit is dependent on the quality factor which is dependent on L and R.
• L is the inductance and R is the resistance, the quality factor Q= L/R.
• If the quality factor is high, then the selectivity of the circuit will be also high.
• Hence the selectivity of the circuit will be high when quality factor is high.

To know more:

1) What do you mean by resonance in series LCR circuit

https://brainly.in/question/2772703.

2) Principle of LCR circuit​

https://brainly.in/question/12656205