Comments on: How is you can have higher amps then volts? http://www.acoupower.com/amps/how-is-you-can-have-higher-amps-then-volts Subwoofer drivers Sun, 05 Feb 2012 16:28:45 +0000 http://wordpress.org/?v=2.7 hourly 1 By: exopccc3 http://www.acoupower.com/amps/how-is-you-can-have-higher-amps-then-volts/comment-page-1#comment-7778 exopccc3 Thu, 29 Oct 2009 12:18:59 +0000 http://www.acoupower.com/amps/how-is-you-can-have-higher-amps-then-volts#comment-7778 You can have small resistance. Take a small piece of metal wire, for example. It has a resistance of less than one ohm. If you can maintain 1 Volt across that, you will get more than 1 Amp (using Ohm's law, V = I*R). Although doing this requires a power supply capable of supplying that much current (i.e. if you used a simple 1.5 V battery, its internal resistance will add to the overall resistance and you will not get much current). Anyways having a "flow" greater than your "pressure" doesn't mean anything. It's like saying my "weight" is greater than your "height".<br><b>References : </b><br> You can have small resistance. Take a small piece of metal wire, for example. It has a resistance of less than one ohm. If you can maintain 1 Volt across that, you will get more than 1 Amp (using Ohm’s law, V = I*R). Although doing this requires a power supply capable of supplying that much current (i.e. if you used a simple 1.5 V battery, its internal resistance will add to the overall resistance and you will not get much current).

Anyways having a "flow" greater than your "pressure" doesn’t mean anything. It’s like saying my "weight" is greater than your "height".
References :

]]> By: Robert_W http://www.acoupower.com/amps/how-is-you-can-have-higher-amps-then-volts/comment-page-1#comment-7777 Robert_W Thu, 29 Oct 2009 12:11:59 +0000 http://www.acoupower.com/amps/how-is-you-can-have-higher-amps-then-volts#comment-7777 Think about it. If you were to put a short circuit across any ideal voltage source the current would approach infinity. In practice a voltage source always has some finite source resistance that limits the current. Now consider connecting a long piece of wire that has a finite resistance say 0.1 ohms across the source. A source of 10 volts would result in a current of 10/0.1 or 100 A. Why is that a problem?<br><b>References : </b><br> Think about it.
If you were to put a short circuit across any ideal voltage source the current would approach infinity.
In practice a voltage source always has some finite source resistance that limits the current.
Now consider connecting a long piece of wire that has a finite resistance say 0.1 ohms across the source. A source of 10 volts would result in a current of 10/0.1 or 100 A.

Why is that a problem?
References :

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