There are so many unique electronic devices available in the market to make your life easy and comfortable. For example, see this amazing electronic led sign board gadget.

A Great electronic device for shops. Real eye catchers.

Now lets see what are the basic terms used in the electronics technology.

What is Electronics?

Electronics is the branch of science and technology in which electrons flow through semiconductors.

Basic Electronics Terms

Electric Charge:

A fundamental property of matter. This property exhibits two states, positive and negative.

Electric Current:

The movement of these charged particles is called electric current.

Voltage / Electromotive force :

In electronics devices an electromotive force or voltage, is developed that causes electrically charged particles to move. This force is called as emf or voltage.

Resistance:

Any mechanical force that tends to retard or oppose motion. It can be said as an obstruction in the path of electric current.

Ohms Law:

Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference or voltage across the two points, and inversely proportional to the resistance between them.

V=IR

V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and R is the resistance of the conductor in units of ohms.

Alternating Current vs Direct Current

The Power that comes from a power plant is called AC (Alternating Current)  whereas batteries and fuel cells produces DC ( Direct Current ). DC is the current that maintains constant polarity. On the other hand AC is the current that changes polarity or direction.

Battery Symbol (left): For DC Voltage Source

Wave Symbol (right): For AC Voltage Source

Transformers:

An electrical device by which alternating current of one voltage is changed to another voltage.

Diodes:

A diode is a device that in simplest terms only allows electricity to flow in one direction. A diode has two ends: a cathode (-) and an anode (+).

Capacitors:

A device consisting essentially of two conductive surfaces separated by a dielectric. It stores electricity.