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Which increase in frequency of an AC sup...

Which increase in frequency of an AC supply , the impedance of an L-C-R series circuit

A

remains constant

B

increases

C

decreases

D

decreases at first, becomes minimum and the increases.

Text Solution

Verified by Experts

The correct Answer is:
D
The frequency vs. impedance graph of a series LCR circuit is as follows :

With increase in frequency, the impedance decreases a first, becomes minimum and then increases.
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