What is electricity?

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bandmanjoe's profile pic

bandmanjoe | Middle School Teacher | (Level 2) Senior Educator

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Electricity is a flow of electrons across a differing electric potential.  The classic battery is a layer of differing metals, separated by a membrane which allows the flow of electrons.  The different metals have differing electronegativity amounts, and thus create a difference between them.  This difference allows for the flow of electrons between the two metals.  If you set the metals up in a what is known as a parallel setting, the electric potentials will all be added together, and that arrangement will increase the amount of electric current the overall cell is able to produce.  If the metals are set up in a series arrangement, each cell will produce it's own electric potential, and there will be no cumulative effect.  There are two types of electical current, DC, or direct current, which is what the simple cell described above produces, and AC, or alternating current. 

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iqbal003's profile pic

iqbal003 | Student, Undergraduate | (Level 1) eNoter

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electricity is the flow of current . it is the form of energy transfered from chemical, mechanical or other any kind of energy . current may be due to -ve or +ve charge cariere or may be due other specie .

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vaishurk | Student, Grade 10 | (Level 1) eNoter

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this is the answer..............

 

Electricity is a form of energy. Electricity is the flow of electrons. All matter is made up of atoms, and an atom has a center, called a nucleus. The nucleus contains positively charged particles called protons and uncharged particles called neutrons. The nucleus of an atom is surrounded by negatively charged particles called electrons. The negative charge of an electron is equal to the positive charge of a proton, and the number of electrons in an atom is usually equal to the number of protons. When the balancing force between protons and electrons is upset by an outside force, an atom may gain or lose an electron. When electrons are "lost" from an atom, the free movement of these electrons constitutes an electric current.

Electricity is a basic part of nature and it is one of our most widely used forms of energy. We get electricity, which is a secondary energy source, from the conversion of other sources of energy, like coal, natural gas, oil, nuclear power and other natural sources, which are called primary sources. Many cities and towns were built alongside waterfalls (a primary source of mechanical energy) that turned water wheels to perform work. Before electricity generation began slightly over 100 years ago, houses were lit with kerosene lamps, food was cooled in iceboxes, and rooms were warmed by wood-burning or coal-burning stoves. Beginning with Benjamin Franklin's experiment with a kite one stormy night in Philadelphia, the principles of electricity gradually became understood. In the mid-1800s, everyone's life changed with the inventionof the electric light bulb. Prior to 1879, electricity had been used in arc lights for outdoor lighting. The lightbulb's invention used electricity to bring indoor lighting to our homes.

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