iPhone Quality Index

AC Ohm's Law by Ray Tools

AC Ohm's Law by Ray Tools

There are no reviews for this item.
Solving Ohms law for DC (E=I*R) is straight forward but what about AC. For AC (E=I*Z) looks simple but the value Z is composed of an inductor (a coil of wire) and a Capacitor. The AC frequency affects these calculations in a somewhat complex manner. This program called AC Ohms Law makes calculating easy. Like my other program for just DC , select the value to solve for; either E, I, Z, R or XL. The program calculates various results using three inputs. The user can choose what to solve for based on whats known. Not sure what the value is just estimate and adjust it later.

A Glossary sheet helps you understand all variables. The inputs switch when you change the variables by just a little bit. This helps understand how the Equations work. All values change as you input values either by keyboard or UP/DN adjusters. The program warns for zero inputs and sets value to near zero. When your done just Email the results to your home base for review on any text editor or spreadsheet. This program is a must for Students and Engineers. It makes the complex understandable. Simply the best AC Ohms Law Calculator.


- AC Updates as You Edit
- AC Number Pad Digital Entry
- Displays a symbolic triangle of Z, XL, R and Pf
- AC Division by Zero warning
- AC Solve for E, I, Z, R or XL
- AC Calculates E,I ,R, XL, L, Pf and angle
- AC Circuit Diagrams showing delay in current.
- AC Help and Glossary with equations, Email

A home electrical system supplies current to an electric drill:
E = 113.5 [VAC] 60 [Hz] I = 2.80 [amps] R = 2.2 [ohms] If you solve for I using the DC equation I = E/R you get I = 51.59 [amps]. What Gives? In an AC circuit I = E/Z. Z is composed of a resistor equal to 2.2 ohms and an inductive coil in the motor L [henrys]. Select “Solve for XL” because we don’t know what the XL component of Z is. Input 113.5 [volts] for E, I = 2.8 [amps] and 2.2 [ohms] for R. The result is XL = 40.5 [ohms] inductive reactance with inductance = .107 [henrys]. Problem solved. The capacitance can be ignored. Look at the Power Factor Pf = .054 or 5 % or a 3.1 degree angle between the voltage wave and current wave which means that the circuit is mostly inductive. If an experiment was conducted with a pure resistor the power Factor would be near one or resistive.

Try solving for other variables using the adjuster buttons to see how the equations work. Check out the help and Glossary sheets.

This app was developed by Raymond Seymour. after working at General Electric for 37 years he’s now making Engineering apps for iOS. As an inventor he has over 60 granted US Patents.
AC Ohm's Law by Ray Tools screenshot #1
AC Ohm's Law by Ray Tools screenshot #2
AC Ohm's Law by Ray Tools screenshot #3
AC Ohm's Law by Ray Tools screenshot #4
Quality Index
2 reviews
Publisher: MEA Mobile
Formats(s): iPhone4, iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPhone6, iPhone6Plus, iPodTouchSixthGen
Genre(s): Utilities, Education
Filesize: 10MB
Age rating: 4+
App version: 1.0
AC Ohm's Law by Ray Tools image #1
04 Mar 2014
16 Oct 2019
Plus new bosses, and heroes with which to fight them
17 Sep 2019
Asia’s chart-topping RPG spreads its wings like Pegasus
07 Aug 2020
Hottest games on the UK App Store right now
31 Jul 2020
Hottest games on the UK App Store right now
24 Jul 2020
Hottest games on the UK App Store right now
17 Jul 2020
Hottest games on the UK App Store right now
10 Jul 2020
Hottest games on the UK App Store right now
Latest Releases
09 Aug 2020
09 Aug 2020
09 Aug 2020
09 Aug 2020

What is the Quality Index?
WHAT IS THE QUALITY INDEX? Condensing critical opinion from the best websites into one definitive score
CONTACT US All the right links to get in touch with the Quality Index team.
GET LISTED! Only the best sites feature on the Quality Index - does yours deserve to join them?
Rss Feeds
RSS FEEDS Keep tabs on the latest news, scores, and entries in the Quality Index.
SYNDICATION & DATA Looking for independent critical data? Find out how you can start using the Qi on your portal.
ADVERTISE WITH US Give your apps a little extra promotion with the biggest independent iPhone Advertising Network.