A series RLC circuit is operating exactly at resonance with voltage amplitude and…

PHYSICS · Single correct · CBSE · Physics · Alternating Current · Alternating Current

Problem

A series RLC circuit is operating exactly at resonance with voltage amplitude

V_m

and resistance

R

. If the resistance is suddenly doubled while

V_m

L

and

C

remain unchanged, what happens to the maximum current amplitude? (a) It becomes

\dfrac{1}{\sqrt{2}}

times its previous value. (b) It remains unchanged. (c) It becomes double its previous value. (d) It becomes half of its previous value.