Ohms Law Wheel is a useful tool that electrical engineers and students refer to when calculating electrical equations, finding faults, and designing electrical circuits.
In this article, we'll look at exactly what Ohms Law Wheel is, what it looks like, and how to use the wheel with values.
Let's start by taking a look at the wheel and what it really is.
What is Ohms Law/PIR Wheel?
Ohm's law and Joule's law formula wheel that is used to calculate P, I, V and R. It shows all formulas created from Ohm's law and PIR triangles. You can use the formula wheel to calculate values ​​such as voltage, current, resistance and power as long as you know 2 of the values ​​listed below.
Ohms law states that: V = I x R
Where V = Voltage (electrical potential) which is measured in volts.
Where I = Current which is measured in amperes.
Where R = Resistance which is measured in Ohms.
Joules law states that: P = V x I
Where P = Power which is measured in watts.
Using Ohm's law and Joule's law, we can calculate 2 of the known variables. That means we can use the wheel to calculate any of the other values ​​you might need to know.
If you want a much more in-depth explanation of Ohm's Law, take a look at our complete Ohm's Law guide here.
If you're an electrician or HVAC technician, you need to have a firm grasp of Ohm's Law.
It helps to describe electrical circuits and the relationship between voltage and current.
Understanding ohm's law will allow you to control the flow of current in a circuit and know when to add resistors.
How to use Ohm's Law
Ohm's law says that the current between two points is directly proportional to the voltage between the two points in an electrical conductor.
The best way to know this law is to use the PIE graph of Ohms Law.
It involves a simple formula with three electrical variables: voltage, current and resistance.
R is the resistance measured in ohms Ω
I is the current measured in amperes or amperes
V is measured in Volts = sometimes known as E (volts)
Imagine each letter (R, I, V) in the corner of a triangle, with V at the top.
This visualization demonstrates the relationship between the variables.
It can also help you determine how many amps a circuit will draw when you cannot use an ammeter.
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