An op-amp circuit has ±15 V supply voltages and a voltage gain of 20. The noninverting voltage V2) is 0.3 V and the inverting voltage V1) is 0.35 V. What is the output voltage from the device?
A) +1 V
B) +6 V
C) -1 V
D) -7 V

Question

Quizplus · Accepted Answer

The output voltage of an op-amp in a differential amplifier configuration can be calculated using the formula Vout = A(V2 - V1), where A is the voltage gain, V2 is the noninverting voltage, and V1 is the inverting voltage. Substituting the given values: Vout = 20(0.3V - 0.35V) = 20(-0.05V) = -1V.

An Op-Amp Circuit Has ±15 V Supply Voltages and a Voltage