Equation That Links Power Current And Resistance

Power potential difference current 230 2 0 460 w.

Equation that links power current and resistance. The voltage v in volts v is equal to the current i in amps a times the resistance r in ohms ω. Ohm s principal discovery was that the amount of electric current through a metal conductor in a circuit is directly proportional to the voltage impressed across it for any given temperature. An electric machine makes use of 300 j of energy to do work in 10s. V v i a r ω.

Current flowing in the circuit i and resistance r. The standard metric unit of power is the watt. Power current 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 resistance of an electrical component can be found by measuring the electric current flowing through it and the potential difference across it. This calculator is based on simple ohm s law as we have already shared ohm s law p i v r calculator in which you can also calculate three phase current. Influare international ampere or intensity and r resistance. This brings us back to georg ohm.

This equation called ohm s law shows the. The power formula is used to compute the power resistance voltage or current in any electrical circuit. The power p in watts w is equal to the voltage v in volts v times the current i in amps a. The nominal impedance z 4 8 and 16 ohms loudspeakers is often assumed as resistance r.

P i v. If a complete circuit is made using a resistor with a resistance r the current flowing through the circuit can be found by using the equation v ir the current is equal to the electromotive force of the source divided by the total circuit resistance. P power i or j latin. 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.

How much power does it use. Electrical power can also be calculated using the equation. V voltage electric potential difference δ v or e electromotive force emf voltage. The electrical relationships between resistance r current i power p and voltage e is defined by ohm s law.

Calculator for solving resistance given power and current in the ohm s law equation. Ohm expressed his discovery in the form of a simple equation describing how voltage current and resistance interrelate. One ohm is defined as the resistance which allows the current of one ampere under a potential difference of 1 volt. Ohm s law equation formula.

V i r and the power law equation formula. Power power p is a measure of the rate at which energy is delivered or used by a circuit.