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MathGroup Archive 2005

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Re: [Newbie] Ohm, Ampere, Volt units

  • To: mathgroup at smc.vnet.net
  • Subject: [mg53441] Re: [mg53426] [Newbie] Ohm, Ampere, Volt units
  • From: "Owen, HL \(Hywel\)" <h.l.owen at dl.ac.uk>
  • Date: Wed, 12 Jan 2005 03:41:11 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com
  • Thread-index: AcT3uqB4Mn1vVcjkQ4uZxzPbyTKKegAAniog

On WinXP, Mathematica v5.1, and using:

<http://jowett.home.cern.ch/jowett/Accelerator/ConstantsUnits.html>
(a very useful extension to the inbuilt Mathematica packages)

Needs["Accelerator`ConstantsUnits`"]
Resistor = 1 Mega Ohm;
Voltage = 1 Milli Volt;
Current = Voltage / Resistor

Convert[Current, Ampere]

gives

Ampere/1000000000

Is that what you wanted?

Hywel

> -----Original Message-----
> From: Alexander Groß [mailto:PLEASEAlexanderGrossREMOVETHIS at gmx.de]
To: mathgroup at smc.vnet.net
> Sent: 11 January 2005 06:31
> To: mathgroup at smc.vnet.net
> Subject: [mg53441] [mg53426] [Newbie] Ohm, Ampere, Volt units
> 
> 
> Hi everyone,
> 
> me (a Mathematica beginner) was trying to let Mathematica do 
> the work. I 
> have a very simple equation which I want Mathematica to solve 
> and compute 
> units.
> 
> Resistor = 1 Mega Ohm;
> Voltage = 1 Milli Volt;
> Current = Voltage / Resistor
> 
> Mathematica displays the solution of current in [Milli Volt] 
> / [Mega Ohm]. 
> That's not what I would like to see. I would like to resolve 
> the units as 
> follows:
> 
> [Milli Volt] / [Mega Ohm] = [Milli Volt]/ [Mega [Volt / 
> Ampere]] = [Nano 
> Ampere]
> 
> I tried the Convert[] function to achieve the desired output, 
> but in vain. 
> Does anybody know how to tell Mathematica to display Ampere?
> 
> Thanks for your time and help.
> 
> Best regards,
> 
> Alex
> 
> -- 
> _______________________________________
> 
> Alexander Groß
> Dipl.-Ing. (BA) für Informationstechnik
> PLEASEAlexanderGrossREMOVETHIS at gmx.de
> http://www.it99.org/axl
> ICQ# 36765668
> _______________________________________ 
> 
> 
> 
> 


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