Saturday, 23 April 2011

Ohm's Law

Definition :

Ohm's Law state that the current ( I ) in a direct current electrical circuit is proportional to the voltage ( V ). And inversely proportional to the resistance ( R ). When the temperature is constant.


Voltage, current and resistance relationship are define by Ohm's Law.

Place finger over letter of unknown,
then known values and their
relationship will be uncovered;

Whenever voltage is supplies to a resistive circuit, the current will flow and generate heat. The heat is power dissipated in the resistor. The symbol is ( P ).

Formula variations of electrical power in relationship to current and voltage;

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