Ohm's Law/Power Law Calculator
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.
Category : Tools
Reviews (27)
Great wee app. Great time saving device as we had to manually configure wind turbine dump load values. Well done.
Easy to use, very useful app. (When you know what your doing)
Enter a second field and it just wipes out other entries. Doesn't work.
I don't understand it , i just want to reduce a 1300mA battery to 300mA any1 help
I am into Vaping. I have to figure out battery safety, on my mechanical vaporizer, in order to ensure safety. Love this calculator.
I tried a few apps before rating this one. This was the best and easiest to use.
Perfect for use at school, I can instantly use to help explain the basics to the students.
Easy to use and works great ! Use it to calculate resistance setting up àttys .
And you don't have to do the math, Good Job!
Not working half the time, difficult to put numbers into..
It is not doing what it said it supposed to do
Does what i need. No screwing around
Really like this app it helps me alot.
I find it useful.
Simple, fast calculator thanks
How to unlock it.I can't open
I'm not watching a video
Padlock on don't know y
Thank
Very user friendly, easy to perform multiple calculations, good stuff!
Quick and easy to use! Very helpful.
Easy to install and use. Very user friendly and useful
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.
I thought this would be a time saver. My calculator works and is faster!
Great little app to calculate simple ohms law and power. Very useful! Thanks!!
Lousy apps. It a waste of time.
Great app easy to use brilliant