Power Resistance Formula

The resistance value is 36 0 ω.

Power resistance formula. Power voltage current resistance p v i r calculator. The power used or dissipated by a resistor can be found using the formula v ir. V v i a r ω. How much power does it use.

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

We ve seen the formula for determining the power in an electric circuit. What is the resistance value. 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 thermal energy is being generated at a rate of 16 0 w.

To calculate the voltage the formula is v ixr. The standard metric unit of power is the watt. Power and resistance formula. The power formula is used to compute the power resistance voltage or current in any electrical circuit.

In this calculator table you may enter two of the four factors in ohm s law. The nominal impedance z 4 8 and 16 ohms loudspeakers is often assumed as resistance r. Work done w 300 j time taken t. 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.

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. P i v. P power i or j latin. To calculate the current the formula is i v r.

The resistance value can be found by rearranging one of the forms of the electric power formula. The form that is applicable relates power voltage and resistance. Ohm s law calculator including power. The power p in watts w is equal to the voltage v in volts v times the current i in amps a.

They are power p or w measured in watts voltage v or e measured in volts current or amperage i measured in amps amperes and resistance r measured in ohms. Influare international ampere or intensity and r resistance. Deriving power and resistance formula will concrete the understanding of the concept. V i r and the power law equation formula.

Ohm s law equation formula. By multiplying the voltage in volts by the current in amps we arrive at an answer in watts let s apply this to a circuit example. V voltage electric potential difference δ v or e electromotive force emf voltage. When you enter two of the four factors in four tables of ohms law calculator like power voltage current and resistance.