State and explain Ohm’s law with its limitations.

State and explain Ohm’s law with its limitations.

Ohm’s law states that the voltage across a conductor is directly proportional to the current flowing through it, provided all physical conditions and temperature, remain constant.

Ohm’s Law Equation:

V = IR

where ,

V is the voltage across the conductor,

I is the current flowing through the conductor

R is the resistance provided by the conductor to the flow of current.

Limitations :-

  • Ohm’s law does not apply to unilateral electrical components such as diodes as well as transistors.
  • Ohm’s law is not followed by semiconductors such as Germanium and Silicon.
  • Ohm’s Law is not applicable to non-linear elements with parameters like capacitance, the voltage and current won’t be constant wrt time

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