Multiple choice

The Op-amp circuit shown in the figure below is a filter. The type of filter and its cut-off frequency are respectively

  1. high pass, 10000 rad/sec

  2. low pass, 1000 rad/sec

  3. high pass, 1000 rad/sec

  4. low pass, 10000 rad/sec
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

At low frequency capacitor is open circuit and voltage acr s non-inverting terminal is zero. At high frequency capacitor act as short circuit and all input voltage appear at non-inverting terminal. Thus, this is high pass circuit.

$$\omega = \frac{1}{RC} = \frac{1}{1 \times 10^3 \times 1 \times 10^{-6} = }=1000 rad/sec$$

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