JEE PHYSICS MCQ: CURRENT ELECTRICITY

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Understanding +4 | -1

Ohm's law fails in which of the following cases

I. Potential

V

depends on

I

non-linearly.

II. The relation between

{V}

and I depends on the sign of

{V}

for the same absolute value of

{V}

.

III.

V

depends on

I

linearly.

View answer and explanation

Correct option: D

I and II

Option D (I and II) is correct because Ohm's law fails when the relationship between voltage and current is non-linear or depends on the polarity of the voltage.

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