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MCQ Practice Question

Analog Electronics Operational Amplifiers

An ideal non-inverting op-amp must provide gain 11. If the resistor from the inverting input to ground is 10 kOhm, the feedback resistor should be?

A10 kOhm
B50 kOhm
C100 kOhm
D110 kOhm

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Correct Answer: C. 100 kOhm

Explanation: Av = 1 + Rf/R1. Thus 11 = 1 + Rf/10 kOhm, giving Rf = 100 kOhm.

Reference: Standard analog electronics: operational amplifiers

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