State And Explain Ohm’s Law With Limitations In Electrical Engineering

Ohm’s Law (D.C. Circuits)

ohm's law in graphical form
ohm’s law in graphical form

Ohm’s law states that “The potential difference between the two ends of a conductor is directly proportional to the current flowing through it, provided it’s temperature and other physical parameters remains unchanged”.

where, R is the resistance between these two points.

Limitations Of Ohm’s Law

Resistance, Temperature, Physical condition should remain constant.

For example Ohm’s law is not applicable to the circuits containing non metallic conductors, semiconductor devices e.g. P-N Diode, Zener Diode, voltage regulator, non-linear resistor etc.


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