ohm's law calculator? on desktop

[Hellfighter]

basic i been using this url: http://www.ohmslawcalculator.com/ohm...calculator.php

doing it from there

i try to find a desktop one to use, only they loaded with virus to them and are fake

hoping some one here know clean "ohm's law calculator".exe? use on desktop

[Guest001]

Originally Posted by Hellfighter

basic i been using this url: http://www.ohmslawcalculator.com/ohm...calculator.php

doing it from there

i try to find a desktop one to use, only they loaded with virus to them and are fake

hoping some one here know clean "ohm's law calculator".exe? use on desktop

In The Mean Time....
Use any old calculator or a "scientific" calculator, if it doesn't have the particular data sets you need then you can enter the formulas yourself as you need them.


Here's the script from the page.

var Volts=1.2345678;
var Amps;
var Ohms;
var Watts;
function Process(form)
{
if (Volts > 0 && Ohms > 0) { Amps =Volts/Ohms; Watts=Volts*Amps;}
if (Volts > 0 && Amps > 0) {Ohms =Volts/Amps; Watts =Volts*Amps;}
if (Volts > 0 && Watts > 0){Amps =Watts/Volts; Ohms=Volts/Amps;}
if (Ohms > 0 && Amps > 0) { Volts =Amps*Ohms; Watts=Amps*Amps*Ohms;}
if (Amps > 0 && Watts > 0) { Volts =Watts/Amps; Ohms=Volts/Amps;}
if (Ohms > 0 && Watts > 0) { Amps=Math.sqrt((Watts/Ohms),2); Volts=Amps*Ohms;}

Volts = Math.round (Volts*100000);
Volts = Volts/100000;
Amps = Math.round(Amps*100000);
Amps = Amps/100000;
Ohms = Math.round(Ohms*100000);
Ohms = Ohms/100000;
Watts = Math.round(Watts*100000);
Watts = Watts/100000;

form.Watts.value = Watts;
form.Ohms.value = Ohms/document.forms[0]._selectResistanceUnits.value;
form.Amps.value = Amps/document.forms[0]._selectCurrentUnits.value;
form.Volts.value = Volts;
}

function SetVolts()
{
Volts = document.forms[0]._inputVoltage.value;
EnableDisableCalculate();
}
function SetAmps()
{
if (document.forms[0]._inputCurrent.value)
Amps = document.forms[0]._inputCurrent.value * document.forms[0]._selectCurrentUnits.value;
else
Amps=0;
EnableDisableCalculate();
}
function SetOhms()
{
if (document.forms[0]._inputResistance.value && document.forms[0]._selectResistanceUnits.value)
{
Ohms = document.forms[0]._inputResistance.value * document.forms[0]._selectResistanceUnits.value;
}
else
{
Ohms = 0;
}
EnableDisableCalculate();
}
function SetWatts(P)
{
Watts = document.forms[0]._inputPower.value;
EnableDisableCalculate();
}

function EnableDisableCalculate()
{
NumFields=0;
if (Volts>0)
NumFields++;
if (Amps>0)
NumFields++;
if (Ohms>0)
NumFields++;
if (Watts>0)
NumFields++;
if (NumFields>=2)
{
document.forms[0]._btnCalculate.disabled=false;
}
else
document.forms[0]._btnCalculate.disabled=true;

}

function ClearForm(form){
Volts=0;
Amps=0;
Ohms=0;
Watts=0;
form.Volts.value = "";
form.Amps.value = "";
form.Ohms.value = "";
form.Watts.value="";
document.forms[0]._btnCalculate.disabled=true;
}

[Guest001]

Ohms Law: I=V/R
Current = Voltage divided by Resistance

Resistance: R=V/I
Resistance = Voltage divided by Current

I=current
V=voltage
R=resistance

Constants:
Mathematical
e (Euler's number) = 2.71828183
π = 3.14159265
Golden ratio = 1.61803399

Physical
c (speed of light) = 299792458 m s-1
symbol (Planck's constant) = 6.626x10-34 m2 kg s-1
symbol (Dirac's constant) = 1.05457163-34 J s
e (electron charge) = 1.60217649x10-19 C
ε0 (vacuum permittivity) = 8.854188x10-12 F m-1
μ0 (magnetic constant) = 1.256637x10-6 N A-2
mp (mass of a proton) = 1.67262164x10-27 kg

Chemical
Na (Avogadro constant) = 6.0221415x1023
Da or AMU = 1.66053886x10-27 kg
R (Gas constant) = 8.314472 J K-1 mol-1
k (Boltzmann constant) = 1.3806505x10-23 J K-1
F (Faraday constant) = 96485.3383 C mol-1

Standard quantities
g (gravity) = 9.80665 m s-2
Atmosphere (pressure) = 101325 Pa