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Length of a Wire and Resistance in a Circuit

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Length of a Wire and Resistance in a Circuit

My aim is to find out when I increase a length of wire there should be

more resistance in a circuit.

Everything on earth is made up of Atoms, which are at a great mass and

with a positively charged nucleus. The atom is made up of protons in

which is made up of fundamental partial called quarks so the proton

have three quarks and they are two going up and one going down and

neutrons is also made up of quarks but arranged in a the opposite way

they have two going down and one going up. Both protons and neutrons

should be about the same mass in the Central nucleus surrounded by

Electron.

The nucleus is surrounded by a number of moving electrons, each of

which has a negative charge equal to the positive charge on a proton.

In a neutral atom, the same number of electrons surrounds the nucleus

as it contains protons. The region of space in which an electron is

most likely to be found is called an orbital. The chemical properties

of an element are determined by the ease with which its atoms can gain

or lose electrons from its outer orbital. [IMAGE]

Metals are good conductors of electricity. They good conductors of

electricity because there atoms lose some of there electrons quite

easily. In a piece of metal, the atom are packed together in a regular

pattern this is called the lattice. They are packed so tightly some of

their electrons become detached from their atom. These 'free'

electrons move around in the space between the atoms they are shared

between the atoms in the piece of metal.

The metal atom carries positive charge because they have more protons

then the electrons. The positive and negative charges attract each

other, so the whole arrangement is held closely together.

The free electrons explain why metals are so good at conducting

electricity. The movement of the electrons is what we call and

electric current.

Any source of electricity like a battery, power pack or the mains
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