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

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

1. Voltage
2. Current
3. Resistance
4. Power

Power
Electric power is the rate at which electric energy is transferred by an electric circuit. 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 though 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 potential difference between two points. The SI unit of Voltage is Volt or joules per coulomb.

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