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What is the effect of an inductor filter on a multi frequency signal?

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What is the effect of an inductor filter on a multi frequency signal?

(a) Dampens the AC signal

(b) Dampens the DC signal

(c) To reduce ripples

(d) To change the current

I got this question in an interview for internship.

This intriguing question originated from Inductor Filters topic in division Application of Diodes of Electronic Devices & Circuits

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Correct answer is (a) Dampens the AC signal

To explain: Presence of inductor usually dampens the AC signal. Due to self induction induces opposing EMF or changes in the current.

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