Multiple choice

In the circuit shown below, the op-amp is ideal, the transistor has VBE = 0.6 and $\beta$ = 150. Decide whether the feedback in the circuit is positive or negative and determine the voltage V at the output of the op-amp.

  1. Positive feedback, V = 10 V

  2. Positive feedback, V = 0 V

  3. Negative feedback, V = 5 V

  4. Negative feedback, V = 2 V
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D Correct answer
Explanation

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