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eTools
eTools PRO

Compatible devices:
iPhone 3Gs, iPhone 4, iPhone 4S, iPhone 5, iPod Touch, iPad, iPad2, The New iPad (3)

Minimal iOS version:
iOS 5.0+

Last version and date:
1.12.4 (2013-04-04)



eTools
eTools M

Compatible devices:
iPhone 3Gs, iPhone 4, iPhone 4S, iPhone 5, iPod Touch, iPad, iPad2, The New iPad (3)

Minimal iOS version:
iOS 5.0+

Last version and date:
1.12.4 (2013-04-04)



eTools
eTools Legacy

Compatible devices:
iPhone 3G, iPhone 3Gs, iPhone 4, iPhone 4S, iPod Touch, iPad, iPad2, The New iPad (3)

Minimal iOS version:
iOS 3.2+

Last version and date:
1.12.4 (2013-04-04)

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Ohm's Law


First of all, select which parameter do you want to compute (V - voltage, I - current, R - resistance) on selector in the middle of the screen. Now you can enter either values and watch to calculating value changes.

Enter known variables to appropriate text fields and select multipliers for its. Immediately after input values, app compute target value and display it.

Under target selector* you may see P (power) value which display what power will be dissipated on resistance in your case.

* For iPhone & iPad layouts. For iPad this parameter above the target selector.

iPad screenshots