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Overview         (For age - group : Below 16 )

Animated K8+ science " Electric wire " How does an electric wire work ? A wire consists of a metal conductor covered by a insulator, it is the insulator that prevents us from getting shocks, the role of a metal conductor is to conduct current. This chemistry animation gives in-depth information about how electric wire works.

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Size (KB) 312 US$    1.00 Rs.79.00
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Duration (hr:min:sec) 0:6:0
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Category : Science
Type : Animation
Total animation length: 6 minutes

The animation covers:

What are the components of a wire ?
How does the covering on wire function as an insulator?
How is polythene made?
What is a thermoplastic?
What are the properties of metal ?
About metallic bond
Why metals are good conductor of electricity?


electric wire

Inside a wire - copper conductor and insulator
Electric wire
Inside a wire - copper conductor and insulator
Closed cubic packing of copper atoms
The chemical structure of polythene
Closed cubic packing of copper atoms
The chemical structure of polythene
Metals are good conductors of electricity
Metals are good conductors of electricity, this is due to presence of delocalized electrons
Details of the animation/ movie /software

An electric wire is made up of metal coated with plastic for insulation. Wire is an elongated, flexible metal filament or thin rod that has a uniform cross section. Mostly aluminum or copper is used in electrical wires. Steel, brass, iron, gold, silver, and platinum are also used nowadays for in wire industry.

Wire has many different applications in modern technology and in household usage. Telephone wires are usually made of copper, a good conductor. High-tension electrical transmission lines are also made up of aluminum wire, which is again a good conductor and is less expensive and lighter in weight than copper wire.

Plastic used for electric insulation is made up of polythene
polythene is made from monomer ethylene (CH2=CH2)
Polythene is a thermoplastic; It is a soft plastic, that softens on heating.

Why is metal used in wire as an electric conductor?
Electric current is the flow of electrons in a wire. In metals, the outer electrons of the atoms belong to a 'cloud' of delocalized electrons. They are no longer firmly held by a specific atom, but instead they can move freely through the lattice of positive metal ions. Normally they move randomly.

Due to presence of free mobile valence electron, when electric field is applied, this free electron moves throughout the metal from positive to negative ends and thus conduct electricity through the metal

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