Title: Basic Contents
Course: Technology > Section: Electricity

Basic Contents

Electricity: is the set of effects produced by movement and interaction of positive and negative electric charges

Circuit: Is a closed path through which an electric current flows

Electric current: Is the flow of electrons in an electric circuit

Materials

We will study the behavior of the materials with the electric current.

We can distinguish various types of materials:

Conductors:

A conductor is an object or type of material that allows the flow of an electrical current through it.

Insulators

A Insulator is  an object or type of material that does not allow the flow of an electrical current through it.

Semiconductors

They are materials that have intermediate properties between conductors and insulators.

They are used in electronic devices. Silicon and germanium

Superconductors

Is a type of material which electrical resistance is zero,

Basic parameters

ELECTRIC CURRENT: Is the number of electrons that flows through a electric circuit per second.

Unit: Ampere A

VOLTAGE: is the electrical energy of a battery to create an electric current in a circuit

Unit: Volt V

RESISTANCE: Is the oposition of a material to the flow of electrons

Unit: OHM Ω