Question

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 Ris small
(c) L is large and R is small
(d) L=R​

Answer 1

Answer:

when L is small and R is small

Explanation:

Because impedence depends on √(Xl - Xc)2+ r2 and if L and R is small power loss will less

Hope you understood.

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