Akash Insight

​
Welcome to Basicelectricalonline.blogspot.com

Monday, October 8, 2018

what is voltage?

October 08, 2018 Basic Electrical , Voltage 5 Comments


What is Voltage?


Definition 

A voltage is nothing but the force that moves electrons from one atom to another atom.
To understand Voltage consider this analogy

Electron attitude
Meet Electron
electron chat
Electron chat 
This is the electron. The electron has a negative charge and a negative attitude.

Two electrons repel each other (you can say they hate each other) like magnets with the same polarity.

 Now if we put the bunch of these guys together in the box its battery.

Bunch of electron
Battery

So all these electrons have negative charges they repel each other and they want to leave these box so if the battery is connected to the circuits the electrons will flow it is called current.

Current
Flow of electrons
If you haven’t read this article about what is current read it here.

So it is the force that moves electrons from one atom to other atoms

To understand the relationship between voltage and current consider this simple analogy. Voltage pushes the current through the conductor which is restrained by the resistance.

ohm law
Voltage Current and Resistance
The greater the voltage, the greater the flow of electrical current

 One volt will drive 6.24 x 1018 electrons in one second.
The unit of voltage is volt.
It is denoted as "V"

Voltage can be direct or alternating. A direct voltage maintains the same polarity at all times. In an alternating voltage, the polarity reverses direction periodically. The number of complete cycles per second is the frequency, which is measured in hertz (one cycle per second), 

AC and DC Voltage

Thank you for your understanding. if you have any doubts ask in comments and don't forget to follow us on mail. 
5 comments:
Labels: , ,

Sunday, October 7, 2018

What is Current?

October 07, 2018 Basic Electrical , Current 3 Comments

What is Current?

An atom is a building block of matter that cannot be broken apart using any chemical means. Nuclear reactions can alter atoms.
There are three parts of the atom 
  1. protons (positively charged)
  2. neutrons (neutral charge)
  3. electrons (negatively charged)
Bulb

 Protons and neutrons form the atomic nucleus. Electrons are attracted to the protons in the nucleus, but are moving so quickly they fall toward it (orbit) rather than stick to protons.
With some types of materials, such as metals, the outermost electrons in the atoms are so loosely bound that they chaotically move in the space between the atoms of that material by nothing more than the influence of room-temperature heat energy. they are often called free electrons and these type of materials are called Conductors


In other types of materials such as glass, the atoms’ electrons have very little freedom to move around. They are called insulator
Here are a few common examples of conductors and insulators:
  • Conductors
  • copper
  • gold
  • graphite
  • dirty water
  • Insulators
  • glass
  • rubber
  • oil
  • pure water

Definition Of Current

The flow of electrons from one atom to another atom is known as current and is designated with the symbol ‘I ‘.
and Unit of Current is Ampere
The amount of current flowing is determined by a number of electrons that pass through a cross-section of the conductor in one second. 
Due to a very small size of atoms, it takes about 10^24 electrons to fill one cubic centimeter of a copper conductor. Trying to represent the small value of current in terms of electrons would be very difficult. That is why current is represented as Ampere.

Meaning of 1A Current

A current of one-ampere means, in one second 6.24 X 10^18 electrons move through a cross-section of a conductor.

 Here is great Video by Sparkfun on Current



3 comments:
Labels: , ,

Contact Form

Name

Email *

Message *