Power And Resistance Formula

What is the resistance value.

Power and 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. One ohm is defined as the resistance which allows the current of one ampere under a potential difference of 1 volt. V 150 v. Learn the power formula.

P power i or j latin. V 10 ma x 15 kω. P i v. How to calculate power.

V i r and the power law equation formula. Ohm s law equation formula. Work done w 300 j time taken t. Voltage volts current amps x resistance ω.

The thermal energy is being generated at a rate of 16 0 w. The voltage v in volts v is equal to the current i in amps a times the resistance r in ohms ω. The resistance value is 36 0 ω. How to use ohm s law to determine current.

Power p voltage v current i. In this calculator table you may enter two of the four factors in ohm s law. The resistance value can be found by rearranging one of the forms of the electric power formula. The above calculator will help you to calculate the power using a simple power formula.

Power voltage current resistance p v i r calculator. The power p in watts w is equal to the voltage v in volts v times the current i in amps a. We ve seen the formula for determining the power in an electric circuit. The power formula is used to compute the power resistance voltage or current in any electrical circuit.

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. In the above circuit we know we have a battery voltage of 18 volts and a lamp resistance of 3 ω. If voltage and current are given then you can easily calculate the value of the power. The nominal impedance z 4 8 and 16 ohms loudspeakers is often assumed as resistance r.

How much power does it use. V voltage electric potential difference δ v or e electromotive force emf voltage. Deriving power and resistance formula will concrete the understanding of the concept. Power and resistance formula.

The standard metric unit of power is the watt. But we have designed this one especially for dc circuits as well as work for single phase ac circuits without power factor. Influare international ampere or intensity and r resistance. The form that is applicable relates power voltage and resistance.

V v i a r ω. The electrical relationships between resistance r current i power p and voltage e is defined by ohm s law.