Ohm's Law/Power Law Calculator
Free AppAbout 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 color. 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, Traditional & Simplified Chinese.
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 color. 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, Traditional & Simplified Chinese.
All Application Badges
Free
downl.
downl.
Android
2.2+
2.2+
Android app
App History & Updates
What's Changed
Added localizations for Traditional & Simplified Chinese
Added localizations for Traditional & Simplified Chinese
More downloads Ohm's Law/Power Law Calculator reached 10 000 - 50 000 downloads
More downloads Ohm's Law/Power Law Calculator reached 5 000 - 10 000 downloads
Version update Ohm's Law/Power Law Calculator was updated to version 1.2
Version update Ohm's Law/Power Law Calculator was updated to version 1.1
What are users saying about Ohm's Law/Power Law Calculator
Q
by Q####:
by Q####:
Great wee app. Great time saving device as we had to manually configure wind turbine dump load values. Well done.
J
by J####:
by J####:
Idea app for vapers
Q
by Q####:
by Q####:
I don't understand it , i just want to reduce a 1300mA battery to 300mA any1 help
D
by D####:
by D####:
How to unlock it.I can't open
Q
by Q####:
by Q####:
Good app for sure
Q
by Q####:
by Q####:
Simple, fast calculator thanks
J
by J####:
by J####:
Ok app
R
by R####:
by R####:
Easy to use and works great ! Use it to calculate resistance setting up àttys .
Q
by Q####:
by Q####:
Padlock on don't know y
D
by D####:
by D####:
Perfect for use at school, I can instantly use to help explain the basics to the students.
D
by D####:
by D####:
Great wee app. Great time saving device as we had to manually configure wind turbine dump load values. Well done.
C
by C####:
by C####:
All good
Z
by Z####:
by Z####:
I'm not watching a video
U
by U####:
by U####:
Easy to use, very useful app. (When you know what your doing)
Z
by Z####:
by Z####:
Lousy apps. It a waste of time.
S
by S####:
by S####:
Not working half the time, difficult to put numbers into..
C
by C####:
by C####:
And you don't have to do the math, Good Job!
S
by S####:
by S####:
Does what i need. No screwing around
Y
by Y####:
by Y####:
I am into Vaping. I have to figure out battery safety, on my mechanical vaporizer, in order to ensure safety. Love this calculator.
S
by S####:
by S####:
Really like this app it helps me alot.
S
by S####:
by S####:
Doesnt allow me to put numbers in. Has a locked symbol by it. This sucks.
S
by S####:
by S####:
I tried a few apps before rating this one. This was the best and easiest to use.
S
by S####:
by S####:
Not working o
S
by S####:
by S####:
I find it useful.
K
by K####:
by K####:
Shite
S
by S####:
by S####:
Very user friendly, easy to perform multiple calculations, good stuff!
S
by S####:
by S####:
Quick and easy to use! Very helpful.
S
by S####:
by S####:
Easy to install and use. Very user friendly and useful
S
by S####:
by S####:
It is confusing. Can't figure out (easily) how to enter a number into 1 of the 4 boxes. I do like that it doesn't need access to my phone or contacts. Also doesn't scale right on my nexus tablet. Might want to run this on various sized devices, probably just need to fix the attribute XML file.
S
by S####:
by S####:
Great little app to calculate simple ohms law and power. Very useful! Thanks!!
H
by H####:
by H####:
Superb ohms law calculator! Very user friendly, easy to perform multiple calculations, good stuff!
M
by M####:
by M####:
Great Calculator Easy to install and use. Very user friendly and useful
M
by M####:
by M####:
Excellent little calculator Great little app to calculate simple ohms law and power. Very useful! Thanks!!
by Q####:
I thought this would be a time saver. My calculator works and is faster!