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The non-inverting closed loop configuration features a high resistance. Therefore in many cases unity gain follower called buffer amplifier is often used to

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The non-inverting closed loop configuration features a high resistance. Therefore in many cases unity gain follower called buffer amplifier is often used to

(a) Connect a high resistance source to high resistance load

(b) Connect low resistance source to low resistance load

(c) Connect low resistance source to a high resistance  source

(d) Connect high resistance source to a low resistance load

The question was posed to me during an online exam.

My question comes from The Inverting Configuration in chapter Operational Amplifiers of Electronic Devices & Circuits

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Right answer is (d) Connect high resistance source to a low resistance load

The best explanation: Buffer amplifiers are required to connect a high resistance load to a low input resistance output.

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