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What are the limitations of ohm …

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What are the limitations of ohm 's law?

Posted by Sunita Tiwari 6 years, 10 months ago

CBSE > Class 12 > Physics

3 answers

Riddhi Dey 6 years, 10 months ago

There are mainly 3 limitations: 1) In certain cases for a good conductor, V ceases to be directly proportional to I. 2) The magnitude of current is not the same for equal magnitude of V of opposite directions, like in diodes. 3) In materials like LED (where GaAs is used), there are multiple values of V for same same value of I, i.e., the relation between V and I is not unique. It can also be included that Ohm's law is held only at a fixed system of conditions.

Aakriti Choudhary 6 years, 10 months ago

1.Ohms law is applicable for ohmic conductors 2. To validate ohms law there must be a constant temperature. 3. Ohms law is not applicable for non ohmic conductors

Rishabh Pandey 6 years, 10 months ago

There must be constant temperature to validate ohms law

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