# 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

## No comments