Q.2 A certain op-amp has an open-loop gain of 80,000. The maximum saturated output levels of this particular device are +12V when the dc supply voltages are +15V. If a differential voltage of 0.15 mV is applied between the inputs, what is the value of the output?

Some of the exercises show op-amps with a positive supply voltage but no information about negative supply voltages. Whenever this is encountered, assume the negative supply voltage has the same magnitude as that of the positive supply

An op-amp is connected to power supplies so that its Vcc value is 15V. It has an open-loop gain of 8 x 106 V/V, and the non-inverting input is 1 µV. If the output voltage is equal to 2V, what is the magnitude of the voltage connected to the inverting terminal?

3R The op-amp will only slightly amplify signals: a.when the supply voltages are less than +/- 25V b.that are common on both the inputs c.that are different on both the inputs d.when the supply voltages are more than +/- 25V