Basic Ohms Law Wheel

Equation ohm s law may sound a bit confusing when written in words but it can be described by the simple formula.

Basic ohms law wheel. Volts v on top of the dividing line. P v x i. Watts is the unit used to describe the amount of power being used by a system on the ohm s law wheel this is denotted by the letter p from mike s electrical nec exam preparation textbook which is why you will notice that this pdf starts with page 3ch ohm s law states that the current through a conductor between two points is directly proportional to the voltage across the two pointsonce the gaa becomes law the house 1 figures are backed out of potential refers to the. The ohm s law formula wheel is represented mathematically in three simple equations.

R is the resistance measured in ohms ω. Just enter 2 known values and the calculator will solve for the others. Which can also be written as i v r and r v i. Where i is the current through the conductor in units of amperes v is the voltage measured across the conductor in.

The wheel above is divided into three sections. One of the most important and basic laws of electrical circuits is ohm s law which states that the current passing through a conductor is proportional to the voltage over the resistance. The combination of ohm s law and joule s law gives us 12 formulas where 2 of the 4 variables are known. Calculate power current voltage or resistance.

The ohms law wheels and graphics below can be a very useful tool to jog your memory and help you to understand their relationship. Introducing the constant of proportionality the resistance one arrives at the usual mathematical equation that describes this relationship. Wired communications is a great source for all of your connector needs. The relationship is written as.

V r i. Ohm s law states that the current through a conductor between two points is directly proportional to the voltage across the two points. P is power measured in watts. Joule s law states that.

The wheel below is a handy tool and memory jogger. Simple to use ohm s law calculator. To use the wheel select the wanted quantity from the inner circle of the wheel and then the appropriate formula in that quadrant based on what you know about the electrical current you are working with.