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2. Relevant equations

3. The attempt at a solution

Output voltage and output current of an OP-Amp

Taking the OP-Amp as an ideal OP-Amp, the voltage at terminal 1 is 0 with respect to ground.

The voltage at B is ## V_B = - 0.5 V ##

## i_{in} ## is from A to B.

There is another 5 mA current going from C to B.

I think both of these current should go towards D. Then, no current is coming out of the OP-Amp, i.e. the direction of ## i_o ## is opposite to what is given in the question.

Since, ## i_in ## is very very less than 5mA, approximately 5 mA goes through 50 ## \Omega ## resistor. So, the voltage drop across this resistor is 0.25 V. Since, the current is towards D, ## V_o = -0.5V -0.25V = -0.75 V ##

So, the correct option is (c).

Is this correct?

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# Homework Help: Output voltage and output current of an Opamp

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