Question

what is ohm's law ? write any two limitations of it.​

Answer 1

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The limitations of Ohm's law are outlined below: This law cannot be applied to unilateral networks. A unilateral network has unilateral elements like diode, transistors, etc., which do not have same voltage current relation for both directions of current. Ohm's law is also not applicable for non – linear elements

Answer 2

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According to ohm's law, voltage induced across a conductor is proportional to the current it carries.

V∝ I

V= IR

where R: Resistance which is constant for a given conductor of fixed geometry and at fixed temperature.

Limitations of Ohm's law are:-

$\pink\longrightarrow$It is applicable only for linear conductors.

$\green\longrightarrow$ It is not applicable if temperature is not constant.