Power Current Resistance Formula

Electric power p is the measure of the electric current i with q coulombs of charge passing through a potential difference of v volts in time t seconds.

Power current resistance formula. Voltage volts current amps x resistance ω. V v i a r ω. Learn the power formula. What is the resistance value.

One ohm is defined as the resistance which allows the current of one ampere under a potential difference of 1 volt. P power i or j latin. V 10 ma x 15 kω. The nominal impedance z 4 8 and 16 ohms loudspeakers is often assumed as resistance r.

How to calculate power. How much power does it use. Power voltage current resistance p v i r calculator. If voltage and current are given then you can easily calculate the value of the power.

The thermal energy is being generated at a rate of 16 0 w. 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. The power formula is used to compute the power resistance voltage or current in any electrical circuit. We ve seen the formula for determining the power in an electric circuit.

Power p voltage v current i. The voltage v in volts v is equal to the current i in amps a times the resistance r in ohms ω. The power p in watts w is equal to the voltage v in volts v times the current i in amps a. Current flowing in the circuit i and resistance r.

Influare international ampere or intensity and r resistance. The standard metric unit of power is the watt. The above calculator will help you to calculate the power using a simple power formula. V 150 v.

An electric machine makes use of 300 j of energy to do work in 10s. The resistance value is 36 0 ω. But we have designed this one especially for dc circuits as well as work for single phase ac circuits without power factor. In the above circuit we know we have a battery voltage of 18 volts and a lamp resistance of 3 ω.

The resistance value can be found by rearranging one of the forms of the electric power formula. How to use ohm s law to determine current. The form that is applicable relates power voltage and resistance. The electrical relationships between resistance r current i power p and voltage e is defined by ohm s law.

The power used or dissipated by a resistor can be found using the formula v ir. Power and resistance formula deriving power and resistance formula will concrete the understanding of the concept. V i r and the power law equation formula. V voltage electric potential difference δ v or e electromotive force emf voltage.

This formula can be used to substitute for the voltage or for the current in the power formula and the power output of a battery that has internal resistance can be found using the formula v ε ir and the formula for power.