Ohm S Law Formula Sheet

With just a handful of basic mathematical formulas you can get pretty far in analyzing the goings on in electronic circuits and in choosing values for electronic components in circuits you design.

Ohm s law formula sheet. This ohm s law triangle graphic is also helpful to learn the formulas. Introducing the constant of proportionality the resistance one arrives at the usual mathematical equation that describes this relationship. Just cover the unknown value and follow the graphic as in the yellow wheel examples above. Power law and ohm s law.

Ohm s law states that the current through a conductor between two points is directly proportional to the voltage across the two points. By lumping ohm s law with joules law one can easily achieve the formula for power. Let s take a look at formulas. Ohm s law and joule s law are commonly used in calculations dealing with electronic circuits.

Ohm s law states the relationship between voltage current and resistance. Just enter 2 known values and the calculator will solve for the others. When current and resistance are given use v ir to calculate voltage. Ohm s law can be expressed in a mathematical form.

E or v voltage volts i current amps r resistance ohms so if you need to find voltage current or resistance simply place your finger over what you re trying to find and the formula wheel will do the rest. Ohm s law and power law formula series circuits in series circuit the voltage is divide between all the resistors. Basic electrical terms and defintions. V voltage expressed in volts i current expressed in amps r resistance expressed in ohms.

Measured in watts is represented by the letter w. Ohm s law formula helps to calculate voltage current and resistance. The ohm s law formula i v r states that v and i are directly proportional for any one value of r. This table will be useful to solve problems and to understand examples.

Experiment to show that i increases in direct proportion to v with the same r. Ohm s law and joule s law. You can find below a table with every formula for the power law and ohm s law. The ohm s law formula or equation is very straightforward.

Simple to use ohm s law calculator. Measured in ohms is represented by r or the greek letter ω power. In the formula wheel you ll see three letters each one represent a value. Because of the ohm s law formula wheel.

V i r. The formula can be manipulated so that if any two quantities are known the third can be calculated.