1.

Voltage V v/s I graph is shown in the figure. A. resistance in region I is ohmic, II & III are non-ohmicB. resistance in region II is zero and III is ohmicC. resistance in region II is zero and III is non-ohmicD. in I it is ohmic, II it is non-ohmic

Answer» Correct Answer - C
In II region : `DeltaV=0`, Hence R = 0
In III region V is not directly proportional to I.
hence region III is non-ohmic.


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