Resistance Power Formula

The above calculator will help you to calculate the power using a simple power formula.

Resistance power formula. The power used or dissipated by a resistor can be found using the formula v ir. The nominal impedance z 4 8 and 16 ohms loudspeakers is often assumed as resistance r. Influare international ampere or intensity and r resistance. But we have designed this one especially for dc circuits as well as work for single phase ac circuits without power factor.

V 150 v. P power i or j latin. Power p voltage v current i. In the above circuit we know we have a battery voltage of 18 volts and a lamp resistance of 3 ω.

In this calculator table you may enter two of the four factors in ohm s law. To calculate the voltage the formula is v ixr. When you enter two of the four factors in four tables of ohms law calculator like power voltage current and resistance. V i r and the power law equation formula.

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. V voltage electric potential difference δ v or e electromotive force emf voltage. Voltage volts current amps x resistance ω.

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. Power voltage current resistance p v i r calculator. We ve seen the formula for determining the power in an electric circuit. Learn the power formula.

To calculate the current the formula is i v r. If voltage and current are given then you can easily calculate the value of the power. 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. 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.

Ohm s law equation formula. P i v. How to use ohm s law to determine current. 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.

How to calculate power. To calculate the resistance the formula is r v i.