THE OHMS LAW

THE OHMS LAW TODAY WERE GONNA LEARN OHMS LAW  SO BEFORE LEARNING THE OHM LAW WE  WILL SE BY WHOM THIS LAW WAS DERIVED  OHMS LAW WAS DERIVED BY GEORGE  SIMON OHM( 16 March 1789 – 6 July 1854)  Ohm's Law  is not a construct which can be  derived . It is essentially a generalized observation. It is only useful for a few materials (conductors and medium resistivity), and even then virtually all of those materials show deviations from the ideal, such as temperature coefficients and breakdown voltage limits. 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. Mathematically, this current-voltage relationship can be written as, In the equation, the constant of proportionality, R is Resistance and has units of ohms, with symbol Ω. The same formula can be rewritten in order to calculate the current and resistance respectively as follows: Ohm’s law only holds true if