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Basic Electrical Quantities Formulas With Simple Explanation (in DC Circuits.)




Power

Electric power is the rate at which electric energy is transferred by an electric uit. The SI unit of power is the watt, one joule per second.

Current

An electric current is a flow of electric charge or a flow of electron through an electrical conductor. The SI unit for measuring an
electric current is the ampere A, which is the flow of electric charges through a surface at the rate of one coulomb per second




Voltage

Voltage is the electric potential difference between two points. The SI unit of Voltage is volts, or joules per coulomb

Resistance

The electrical resistance of an electrical element is the opposition to the passage of an electric current through that element
The SI unit of electrical resistance is the ohm

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