Consider the circuit with an ideal OPAMP shown in the figure.
Assuming $\left|V_{\mathrm{IN}}\right| \ll\left|V_{\mathrm{CC}}\right|$ and $\left|V_{\mathrm{REF}}\right| \ll\left|V_{\mathrm{CC}}\right|$. The condition at which $V_{\text {OUT }}$ equals to zero is
A circuit with an ideal OPAMP is shown in the figure. A plus $V_{\text {IN }}$ of 20 ms duration is applied to the input. The capacitors are initially uncharged.
The output voltage $V_{\text {OUT }}$ of this circuit at $\tau=0^{+}$(in integer) is $\_\_\_\_$ V.The components in the circuit shown below are ideal. If the op-amp is in positive feedback and the input voltage $V_i$ is a sine wave of amplitude 1 V , the output voltage $V_0$ is
In the circuit shown below, all the components are ideal. If $V_i$ is +2 V , the current $I_0$ sourced by the OpAmp is $\_\_\_\_$ mA .
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