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Time Response of Reactive Circuits - Engineering

Q1:

An RC differentiator acts as a

A low-pass filter

B high-pass filter

C band-pass filter

D band-stop filter

ANS:B - high-pass filter

The High-pass RC circuit is also known as a differentiator. The name high pass is so called because the circuit blocks the low frequencies and allows high frequencies to pass through it. It is due to reason that reactance of the capacitor decreases with the increasing frequency.