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An electrical signal can be represented in either Thevenin form or Norton From. However, Norton representation is preferred when

(a) The load resistance is very large as compared to the source resistance

(b) The load resistance is very low as compared to the source resistance

(c) There is no preferred case

(d) Both of the cases mentioned are the preferred case

I had been asked this question by my college director while I was bunking the class.

My question is from Signals topic in section Signals and Amplifiers of Electronic Devices & Circuits

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The correct choice is (b) The load resistance is very low as compared to the source resistance

The explanation is: a is preferred in Thevenin’s case and b in Norton’s case

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