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what is electricity

2006-07-22 00:16:34 · 18 answers · asked by Anonymous in Science & Mathematics Engineering

18 answers

Electricity is a property of matter that results from the presence or movement of electric charge. Together with magnetism, it constitutes the fundamental interaction known as electromagnetism. Electricity is responsible for many well-known physical phenomena such as lightning, electric fields and electric currents, and is put to use in industrial applications such as electronics and electric power.

2006-07-22 00:20:06 · answer #1 · answered by Country Boy 5 · 0 0

Electricity can flow readily through a conductor (usually metal) that has loosely held electrons orbiting the metal's atoms. When you "push" a quantity of electrons into one end of a wire, all the free electrons along the circuit are pushed along to make way for the new electrons. Although the electrons may flow very slowly, the "effect" of the pushing and shoving is felt at the far end of the wire at the speed of light. Just like people pushing and shoving through a crowd, the flow of new electrons is "resisted" (except in super conductors that have zero resistance!). The resistance causes the metal wire to heat up (as in the filament of a light bulb which is a far more stingy path than the copper lead wires connecting it to house current). The heated filament represents energy added to some or all of the atom's orbiting electrons which move to higher more energetic orbits. As the electrons move back to rest states they give off infra-red photons that we can feel as radiated heat. Try pushing your way through a crowd and others will get hot under the colar too!

If the material has few free electrons such as glass or a ceramic, it almost entirely resists electricity and is called a resistor or insulator. Ceramic or glass insulators support the high tension lines that criss-cross the countryside preventing the "juice" from leaking or arcing to the towers and ground.

Something must push the fresh electrons into a wire to produce electricity. A common flashlight battery uses a chemical reaction (between zinc and an acid paste) to create an electron pressure or voltage. Mechanically forcing a coil of wire to spin inside a magnetic field causes an electron pressure too. Voltage (or potential difference) is like water pressure and the circuit wire is like a water pipe. The battery or electric generator forces electrons to flow through a circuit and electricity is like flowing water. Nature's electricity is of course called a lightning bolt. Hope that helps a little.

2006-07-22 07:48:30 · answer #2 · answered by Kes 7 · 0 0

Each body has an
unic system of atomic arrangement to be constructed. The positive
and negative charge distribution normaly remains at an equlibrium
condition. Due to the influence of different sources of energy, the
body becomes electrically imbalanced. When two dissimilar electrical charged-body is connected with conductor electron will
flow to keep both body electrically balanced. The electron flow is called current and electrically imbalanced state is called electricity.

2006-07-22 11:38:53 · answer #3 · answered by akash 1 · 0 0

Electricity is a property of matter that results from the presence or movement of electric charge. Together with magnetism, it constitutes the fundamental interaction known as electromagnetism. Electricity is responsible for many well-known physical phenomena such as lightning, electric fields and electric currents, and is put to use in industrial applications such as electronics and electric power.

2006-07-22 08:21:22 · answer #4 · answered by Anonymous · 0 0

It is very interesting. Electricity is only a theory by the scienctist that it runs in revert to the flow of electron. No one's ever seen an electron, just the effect that it makes, let alone the electric current. Just thinking, only the theory, we could use it so much in modern world.

2006-07-22 07:20:08 · answer #5 · answered by frameofice 2 · 0 0

An atom has electrons and protons; electrons are said to possess negative charge and protons to have positive charges.

Like charges repel and unlike charges attract.

This property of paricles is harnessed for human welfare and the branch of that study is electicity.

2006-07-22 08:00:36 · answer #6 · answered by Pearlsawme 7 · 0 0

A flow of positively or nigetively charged electrons or simply invisiable energy

2006-07-22 07:34:04 · answer #7 · answered by Vipul C 3 · 0 0

Flow of electrons

2006-07-22 09:39:26 · answer #8 · answered by Q 2 · 0 0

Flow of electron

2006-07-22 07:18:51 · answer #9 · answered by sharanan 2 · 0 0

It is the energy discovered by Benjamin Franklin

2006-07-22 07:21:11 · answer #10 · answered by xrider143 2 · 0 0

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