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The gain for an ideal non-inverting operational amplifier is (given R2 is the feedback resistance)

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The gain for an ideal non-inverting operational amplifier is (given R2 is the feedback resistance)

(a) R2/R1 – 1

(b) R2/R1

(c) -R2/R1

(d) R2/R1 + 1

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The question is from The Non Inverting Configuration topic in section Operational Amplifiers of Electronic Devices & Circuits

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Best answer
The correct choice is (d) R2/R1 + 1

Easiest explanation: It is a standard mathematical expression.

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