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When op-amp is used as integrator the feedback element is:

When op-amp is used as integrator the feedback element is: Correct Answer Capacitor

An ideal Integrator circuit is shown below:

[ alt="F1 R.D M.P 14.08.19 D1 (1)" src="//storage.googleapis.com/tb-img/production/19/08/F1_R.D_M.P_14.08.19_D1%20%281%29.png" style="width: 271px; height: 153px;">

It is clear from the circuit diagram of the integrator, the feedback element is a Capacitor.

Note:

At high frequencies, the capacitor is a short circuit so the output is 0.

At low frequencies, the capacitor is an open circuit, the output voltage is the amplified input voltage(the output is non-zero).

thus an ideal integrator acts as a low pass filter.

[ alt="26 June 1" src="//storage.googleapis.com/tb-img/production/19/08/26%20June_1.png" style="width: 160px; height: 46px;">

The feedback path in an op-amp differentiator consists of a resistor.

[ alt="differentiator" src="//storage.googleapis.com/tb-img/production/19/03/differentiator.PNG" style="width: 350px; height: 220px;">

At high frequencies, the capacitor is a short circuit so the output is the amplified input voltage(the output is non-zero)

At low frequencies, the capacitor is an open circuit, the output voltage is 0.

thus an ideal Differentiator acts as a High pass filter.

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