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Hi I'm Radiant!Welcome to my science blog..I like to EAT and I love talkingandplayingand jokingandbeingcrazyand..you get the idea :D



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Saturday, February 13, 2010



Electricity

Electric current

For electrical appliances to work, enough electricity must flow through it.This flow of electricy is due to the flow of electric charges.They can be both positive and negative.When these charges move, they form an electric current.
Electric current is the rate of flow of electric charges.The path in which current flows is called a circuit.

Current is represented by the symbol (I).

Very irritating fact caused by CONVENTION that everyone was arguing about.

Electric current is due to the flow of electrons in a circuit.Electrons move from the negative terminal of a dry cell its positive terminal. However, when scientists discovered current flow, thye did not know that electrons existed. They all thought current flowed from the positive terminal of a source to the negative terminal.This is known as the conventional current flow.

AFTER electrons were discovered, they found out that current actually flowed from the negative terminal to the positive. But conventional current is still used to understand circuits.

(Our big question : Why do we still use the conventional current to learn about circuits when we actually already know now that current flows from the negative to the positive terminal of a cell?! Why can't they just change and standardise it to the electron flow, which is actually correct? -.-)


rained @ 12:21 AM