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Form the graph between current I and voltage V shown below, identity the portion corresponding to negative resistance.

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Form the graph between current I and voltage V shown below, identity the portion corresponding to negative resistance. 

(A) AB 

(B) BC 

(C) CD 

(D) DE

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The correct option (C) CD

Explanation:

Negative resistance = – (V/I) = [V/(– I)]

Hence the portion is CD where resistance is negative.

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