The inverting amplifier in the circuit shown has an input resistance of 500 kΩ, an output...

The inverting amplifier in the circuit shown has an input resistance of 500 kΩ, an output resistance of 5 kΩ, and an open-loop gain of 300,000. Assume that the amplifier is operating in its linear region.

a) Calculate the voltage gain (υo/vg) of the amplifier.

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b) Calculate the value of υn in microvolts when υg = 1 V.

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c) Calculate the resistance seen by the signal source (υg).

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d) Repeat (a)-(c) using the ideal model for the op amp.