Ohm's Law & Power Law Calculator
Free
1.7for iPhone, iPod touch
8.7
25 Ratings
Cressall Resistors Ltd
Developer
1.6 MB
Size
Jun 12, 2017
Update Date
Utilities
Category
4+
Age Rating
Age Rating
Ohm's Law & Power Law Calculator Screenshots
About Ohm's Law & Power Law Calculator
Ohm's law and the power law describe the relationship between the following four electrical entities:
Entity..............Unit.......Symbols
Voltage..........Volts......V
Current..........Amps.....A, I
Resistance...Ohms.....Ω, R
Power.............Watts.....W
Ohm's law: Voltage = Current x Resistance
Power law: Power = Voltage x Current
Set any two, and the other two can be calculated.
This application allows you to continually lock one parameter and input another, enabling rapid "what-if" recalculation.
Use the keypad to enter a value then tap on the parameter you want to set. It is now fixed, as shown by the padlock symbol.
Enter another parameter and the remaining two are calculated. The most recently entered parameter becomes the new fixed one.
You can alter which parameter is fixed by tapping it when the input box is empty, or by dragging the padlock to it.
You can 'Freeze' a parameter with a long press until it changes colour. Now alter any of the other three as required. To unfreeze, with the input box empty, tap any other parameter.
The value of the fixed parameter may not be changed. If you attempt to do so, the padlock will flash. In this case, fix another parameter first.
Available in the following Languages:
English, French, German, Swedish, Russian, Polish, Spanish, Italian, Chinese (Traditional & Simplified).
* * * * * * * * * * * * * * * * * * * * * * *
If you find any errors, or have any suggestions, please email us the details & we will address them!
support@cressall.com
Entity..............Unit.......Symbols
Voltage..........Volts......V
Current..........Amps.....A, I
Resistance...Ohms.....Ω, R
Power.............Watts.....W
Ohm's law: Voltage = Current x Resistance
Power law: Power = Voltage x Current
Set any two, and the other two can be calculated.
This application allows you to continually lock one parameter and input another, enabling rapid "what-if" recalculation.
Use the keypad to enter a value then tap on the parameter you want to set. It is now fixed, as shown by the padlock symbol.
Enter another parameter and the remaining two are calculated. The most recently entered parameter becomes the new fixed one.
You can alter which parameter is fixed by tapping it when the input box is empty, or by dragging the padlock to it.
You can 'Freeze' a parameter with a long press until it changes colour. Now alter any of the other three as required. To unfreeze, with the input box empty, tap any other parameter.
The value of the fixed parameter may not be changed. If you attempt to do so, the padlock will flash. In this case, fix another parameter first.
Available in the following Languages:
English, French, German, Swedish, Russian, Polish, Spanish, Italian, Chinese (Traditional & Simplified).
* * * * * * * * * * * * * * * * * * * * * * *
If you find any errors, or have any suggestions, please email us the details & we will address them!
support@cressall.com
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What's New in the Latest Version 1.7
Last updated on Jun 12, 2017
Old Versions
This app has been updated by Apple to display the Apple Watch app icon.
Latest iOS support(64 Bit). Minor UI improvements.
Latest iOS support(64 Bit). Minor UI improvements.
Show More
Version History
1.7
Jun 12, 2017
This app has been updated by Apple to display the Apple Watch app icon.
Latest iOS support(64 Bit). Minor UI improvements.
Latest iOS support(64 Bit). Minor UI improvements.
1.6
Oct 28, 2013
Update for iOS 7 styling.
Demo feature - Shows how to enter, lock, and freeze parameters.
Demo feature - Shows how to enter, lock, and freeze parameters.
1.5
Jun 6, 2013
Added automatic SI unit prefixes.
App now handles & conveniently displays large and small values.
App now handles & conveniently displays large and small values.
1.4
May 30, 2013
Fixed:
No recalculation after manually dragging padlock.
Freezing of zero value parameter.
No recalculation after manually dragging padlock.
Freezing of zero value parameter.
1.3
May 16, 2013
Added enhanced parameter locking:
You can now "Freeze" a parameter with a long press until it changes colour. Now alter any of the other three as required. To unfreeze, with the input box empty, tap any other parameter.
Added Localisations for Spanish, Chinese (Traditional & Simplified), and Italian
You can now "Freeze" a parameter with a long press until it changes colour. Now alter any of the other three as required. To unfreeze, with the input box empty, tap any other parameter.
Added Localisations for Spanish, Chinese (Traditional & Simplified), and Italian
1.2
Apr 11, 2013
Localisations for Polish and Russian
1.1
Mar 10, 2013
Localisation for German, Swedish & French.
1
Jan 16, 2013
Ohm's Law & Power Law Calculator FAQ
Click here to learn how to download Ohm's Law & Power Law Calculator in restricted country or region.
Check the following list to see the minimum requirements of Ohm's Law & Power Law Calculator.
iPhone
Requires iOS 8.0 or later.
iPod touch
Requires iOS 8.0 or later.
Ohm's Law & Power Law Calculator supports English, French, German, Hindi, Italian, Polish, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese