The Ohm's Law is a powerful and simple tool to analyze
electric circuits. It shows the relationship between voltage (V) and current
(I) in a conductor. But, in order to properly apply to circuits (real
circuits), its limitations must be understood. Most conductors,
resistance is greatly unaffected by current or voltage (resistance is stable
property).
Limitation: this law does not apply to rectifiers or semiconductors or to the
conduction of electricity through gases.
Formula: current (I) is equal to voltage (V) over resistance
(R)
