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OHM'S LAW

Ohm's law: 

The concept of ohm's law was proposed by Georg Simon Ohm and so it is named as Ohm's law.
It states that the current flowing through a conductor is directly proportional to the potential difference across the ends of the conductor and inversely proportional to the resistance.
                        I=V/R
         here,
                        I-current
                       V-potential difference
                       R-resistance
Ohm's law cannot be applied to
  • Magnetically coupled circuits such as Transformers
  • Vacuum tubes
  • Gas filled tubes
  • Semiconductor devices such as diodes
  • Transistors
  • Temperature dependent devices such as thermistors
  • Photo sensitive devices
  • Non linear elements
It is applicable for the linear elements only.

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