Voltage Current Resistance Power Wheel

The combination of ohm s law and joule s law gives us 12 formulas where 2 of the 4 variables are known.

Voltage current resistance power wheel. The nominal impedance z 4 8 and 16 ohms loudspeakers is often assumed as resistance r. More specifically ohm s law defined that the current i through a conductor between two points is directly proportional to the voltage v and is inversely proportional to the resistance r. P is power measured in watts. V i r and the power law equation formula.

Formula wheel electrical engineering electronics ohm s law pie chart circle power wheel electric power formula fundamentals general ohm s law emf ohms audio physics electricity electronics formula wheel formulas amps watts volts ohms cosine equation audio engineering pie chart charge physics formula for power calc voltage bridging eberhard sengpiel sengpielaudio. P v x i. It is the most fundamental law that defines the relationship between the current i resistance r voltage v and power p. Ohm s law equation formula.

Calculate power current voltage or resistance. P i v. Influare international ampere or intensity and r resistance. R is the resistance measured in ohms ω.

V is the electrical potential voltage measured in volts v i is the current measured in amperes amps a and. 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. Joule s law states that. The power p in watts w is equal to the voltage v in volts v times the current i in amps a.

We can use the wheel to extract 12 formulas 3 for each voltage current power and resistance. But we have designed this one especially for dc circuits as well as work for single phase ac circuits without power factor. The circuit with the higher resistance will allow less charge to flow meaning the circuit with higher resistance has less current flowing through it. The voltage v in volts v is equal to the current i in amps a times the resistance r in ohms.

Let s take a look at ohm s wheel. V voltage electric potential difference δ v or e electromotive force emf voltage. Simple to use ohm s law calculator. P w v v i a ac ohm s law formula.

This brings us back to georg ohm. Power voltage current resistance p v i r calculator. The ohm s law wheel represents all possible relationships between power p resistance r current i and voltage v. P power i or j latin.

Just enter 2 known values and the calculator will solve for the others. Ohm defines the unit of resistance of 1 ohm as the resistance between two points in a conductor where the application of 1 volt will push 1 ampere or 6 241 10 18 electrons.