An ampere is a measure of current -- how much electricity is passing through your wire at any given time. An ohm is a measure of resistance -- how much is the wire resisting the flow electricity through the wire. Although many electrical engineers frown on this analogy, I find it useful: Think of your wire as a big garden hose. You turn on the water and charge the hose. The water pressure is kind of analogous to voltage -- it's the difference between the pressure at the source and the open end of the hose, and is a measure of potential between the two points. Amperage is kind of like flow rate -- how many gallons a minute are you getting out of that hose? And resistance is a measure of the friction slowing the flow down, as well as any back-pressure if you stuck your finger over the end or if the hose develops a kink. If you got a bigger hose, you could obviously move more water and it is less likely to get constricted (thicker wire means it can handle more amps, and has less resistance to flow) but you'd have to have a bigger pressure source to push that much water through it (needs a higher voltage to maintain the same level of current through a thicker wire) Does that help?
2006-06-17 11:30:24
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answer #1
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answered by theyuks 4
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Ampere , Is the SI unit of electric current, defined as that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross section, and placed one metre apart in a vacuum, would produce between these conductors a force equal to 2 *10^-7 newton per metre of lenght. This unit, at one time called the absolute ampere, replaced the international ampere. the latter was defined as the constant current that, when flowing through a solution of silver nitrate in wate deposits silver at rate of 0.001 118 grammes per second.
Ohm, is unit of electric resistence, defined as the resistence between two points on a conductor through which a current of one ampere flows as a result of a potential difference of one volt applied between the points, the conductor not being a source of electromagnetic force. this unit replaced the international ohm defined as the resistence of column of mercury of mass 14.4521 grammes, lenght 106.300 cm at 0 degrees celcius, and uniform cross section.
Hope this helps.
2006-06-17 18:54:55
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answer #2
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answered by ranmat_88 1
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Ampere is the SI unit of electric current, aproximately equal to the flow of 6 x 10^8 electrons per second, when passed through solution of silver nitrate, it will deposit silver at 0.001118 grams per second.
Ohm is the unit of electrical resistance. Resistant having potential difference os one volt when one ampere current is passed through it.
2006-06-17 23:10:37
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answer #3
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answered by PorkyBishop 2
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i dont know but i do know u put between in yo question two tymes!!!!
2006-06-17 18:26:52
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answer #4
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answered by diiA b. 1
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