Electric Current

Tags: Electrical

Electric current, abbreviated as I, is the flow of electric charge in a circuit or a conductor.  The current flow is caused by the movement of electrons, which are negatively charged particles, through a conductor such as a wire.  The rate of flow of electric charge (current) is typically determined by the voltage (potential difference) applied across the conductor and the resistance of the conductor.  The relationship between voltage, current, and resistance is described by Ohm's Law, which states that the current through a conductor is directly proportional to the voltage applied across it and inversely proportional to its resistance.

 

Electric Current formula
\(\large{ I = \frac{ V }{ R } }\)     (Electric Current) \(\large{ V = I \; R  }\) \(\large{ R = \frac{ V }{ I } }\)
Symbol	English	Metric
\(\large{ I }\) = current	\(\large{I}\)	\(\large{\frac{C}{s}}\)
\(\large{ V }\) = voltage	\(\large{V}\)	\(\large{\frac{kg-m^2}{s^3-A}}\)
\(\large{ R }\) = resistance	\(\large{\Omega}\)	\(\large{\frac{kg-m^2}{s^3-A^2}}\)

 

Electric Current formula
\(\large{ I = \frac{ P }{ V } }\)     (Electric Current) \(\large{ P =  I \; V  }\) \(\large{ V = \frac{ P }{ I } }\)
Symbol	English	Metric
\(\large{ I }\) = current	\(\large{I}\)	\(\large{\frac{C}{s}}\)
\(\large{ P }\) = power	\(\large{P}\)	\(\large{\frac{kg-m^2}{s^3}}\)
\(\large{ V }\) = voltage	\(\large{V}\)	\(\large{\frac{kg-m^2}{s^3-A}}\)

 

Electric Current formula
\(\large{ I = \sqrt{ \frac{ P }{ R } } }\)     (Electric Current) \(\large{ P =  I^2 \; R  }\) \(\large{ R = \frac{ P }{ I^2 } }\)
Symbol	English	Metric
\(\large{ I }\) = current	\(\large{I}\)	\(\large{\frac{C}{s}}\)
\(\large{ P }\) = power	\(\large{P}\)	\(\large{\frac{kg-m^2}{s^3}}\)
\(\large{ R }\) = resistance	\(\large{\Omega}\)	\(\large{\frac{kg-m^2}{s^3-A^2}}\)