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Friday, April 10, 2009

Electric potential

The concept of electric potential is closely linked to that of the electric field. we should notie that small electrical potenial is the main reason for the chemical progress because that small potential have amount of energy so we can use it in many daily needs such as in the watch,radio cassete,and other fields the reason of that discovery is the frog when an ascientist is passing akinfe over there in the presence of asolution he noticed that that frog although its died but it have avibrational movement after many research the scientist noticed that the reason of that movement is the electricity when there is ametal and abody conducting to electricity in the presence of acertain metal the electricity come throuth thatbody . A small charge placed within an electric field experiences a force, and to have brought that charge to that point against the force requires work. The electric potential at any point is defined as the energy ..
The electric field was formally defined as the force exerted per unit charge, but the concept of potential allows for a more useful and equivalent definition: the electric field is the local gradient of the electric potential. Usually expressed in volts per metre, the vector direction of the field is the line of greatest gradient of potential, and where the equipotentials lie closest together.

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