Ohms Law Statement
proportional to the voltage across the two points. Introducing the constant of proportionality, the resistance, one arrives at the usual mathematical equation that describes this relationship:
V is the voltage measured across the conductor in units of volts,
R is the resistance of the conductor in units of ohms.
More specifically, Ohm’s law states that the R in this relation is constant, independent of the current.
Georg Simon Ohm
voltage both in the first and third quadrant. The slope of straight line is also same in both the quadrants which shows that the potential difference across the terminals of the conductor is proportional to the current passing through it i.e. V α I.
- The resistances which Ohm considered are linear i.e. the resistances which have linear V-I characteristic. Also, these are bilateral i.e. irrespective of direction of flow of current theresistance does not charge.
- Physical condition (Temperature, Pressure etc.) of the conductor remaining constant, the voltage across the terminals of a conductor is proportional to the current flowing through it.