Question

two limitations of ohm law​

Answer 1

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Non-linear elements and unilateral networks do not support ohm's law.

When resistance changes then ratio of voltage across the resistor and current passing through it will not be constant.

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Answer 2

Answer:

Ohm's law is not a fundamental law of nature. There are a number of commonly used circuit elements which do not obey this law. They have one or more of the following properties:

1. V depends on I non-linearly.

2. The relationship between V and I depends on the sign of V for the same absolute value of V.

3. The relation between V and I is non-unique, that is, for the same current I, there is more than one value of voltage V.