A-ducation

Static electricity is an electric charge that does not flow or electricity the electric charge of which lies at a rest condition.

An atom consists of protons (positive charges), electrons (negative charges) and neutrons (has no charges).

A body is said to be positively charged, if the body lacks electrons (protons > electron, while a body is said to be negatively charged, if the body has excessive electrons (proton < electron).

Bodies with similar electric charge, if they are bought close to each other, will repel each other, while bodies with dissimilar electric charges, if they are bought closer, will attract each other.

Coulomb's law
" The force of attraction or repulsion between two electric charges is directly proportional to their charges and inversely proportional to the square of distance between the two charges."

mathematically, Coulomb's law is written :

Electric field is a region around an electrically charged body that is still influenced by electric force.


Electric force line in a positive charge tend to go away from positive charge , while electric force lines in a negative charge tend to go inward approaching the negative charge.

Electric field strength at a point at a certain distance from a a source charge Q is formulated as follows.

You have known that electric currents can flow in an electric circuit the electric current sources or voltage sources are found. in other words, in the electric circuit there is a potential (positive pole) and low potential (negative pole). electric currents flow from a high potential to a low potential.

Potential difference or electric voltage is an energy that functions to conduct electric changes from one point to another point.

The larger the potential difference, the more energy is carried by each electric charge. the unit of electric potential difference is volt(V). The unit was taken from the name of an Italian scientist, Alessandro Volta (1775-1827).

Potential difference of 1 volt is defined as the energy of 1 joule from voltage source to displace electric charges of 1 coulomb.

Our solar system consists of an average star we call the Sun, the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. It includes: the satellites of the planets; numerous comets, asteroids, and meteoroids; and the interplanetary medium. The Sun is the richest source of electromagnetic energy (mostly in the form of heat and light) in the solar system. The Sun's nearest known stellar neighbor is a red dwarf star called Proximal Century, at a distance of 4.3 light years away. The whole solar system, together with the local stars visible on a clear night, orbits the center of our home galaxy, a spiral disk of 200 billion stars we call the Milky Way. The Milky Way has two small galaxies orbiting it nearby, which are visible from the southern hemisphere. They are called the Large Magellanic Cloud and the Small Magellanic Cloud. The nearest large galaxy is the Andromeda Galaxy. It is a spiral galaxy like the Milky Way but is 4 times as massive and is 2 million light years away. Our galaxy, one of billions of galaxies known, is traveling through intergalactic space.

The planets, most of the satellites of the planets and the asteroids revolve around the Sun in the same direction, in nearly circular orbits. When looking down from above the Sun's north pole, the planets orbit in a counter-clockwise direction. The planets orbit the Sun in or near the same plane, called the ecliptic. Pluto is a special case in that its orbit is the most highly inclined (18 degrees) and the most highly elliptical of all the planets. Because of this, for part of its orbit, Pluto is closer to the Sun than is Neptune. The axis of rotation for most of the planets is nearly perpendicular to the ecliptic. The exceptions are Uranus and Pluto, which are tipped on their sides.