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Does electricity flow from point to point, from a positive charge to a negative charge? And what exactly is a charge?

2007-01-06 02:21:51 · 3 answers · asked by sirprizeme139 3 in Science & Mathematics Biology

3 answers

Exactly what is a "charge" ? That is a tough question because it is not anything else except itself. Electrons that surround atoms carry a negative charge. Protons in the nucleus of atoms carry a positive charge. The elctrons can move from one atom to another, and if you have a wire that consists of billions and billions of metal atoms where the electrons are held rather loosely, then the electrons can pass along the wire - that is what we call a "current". An electron charge can also pass though a liquid (say, salt water) if the atoms in the water have picked up an extra electron.

Electricity flows from negative to positive. That seems a little backwards, right? Well, it is. In the early days of electrical science the science guys knew that there were two forms of electricity, but they didnt know which one was the form that was normally moving. So, they called the one they though was the moving one "positive" and the other kind "negative" but they guessed wrong! The "negative" is really the electrons and the positive is when the electrons are missing. You win a few and you lose a few!

All this stuff about electricity is a big part of the subject called chemistry. So if you want to learn all the details, get a book about chemistry.

2007-01-06 04:55:16 · answer #1 · answered by matt 7 · 0 0

Well you must have some idea of what an electric circuit is.
It consists of a source of electrical power.
usually a battery

You have.two cords connected to the battery, always a negative and a positive.

The positive lead goes through a form of of resistance and and a source of power and leads back to the battery on the side negative,

This is a very simple system of a circuit. you need to have a switch so that you can switch it all off and on this usually near the positive


And......................................... there you go a simple circuit

2007-01-06 10:57:17 · answer #2 · answered by Anonymous · 1 0

yes u are right by the conventional theory about electricity.
a charge is a force or a difference in the state of an atom where it is in an ionized state. or due to the change in the polarity of the electricity current flows this is a charge.
hope i hav been useful.

2007-01-06 10:31:46 · answer #3 · answered by akshayrangasai 2 · 0 1

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