Voltage Times Current Equals

Power voltage alternating current.

Voltage times current equals. So watts are equal to power factor times amps times volts. V v i a r ω. For direct current dc power p can be calculated by multiplying the voltage and current when they are known. This is also true in an ac circuit when the alternating current and voltage are in phase.

The unit of current is the ampere a which is equal to one coulomb per second coulomb is the unit of charge the symbol i is used to represent current though j is often used in engineering sources. In a dc circuit the power is equal to the voltage times the current or p v i. Active 3 years 11 months ago. The power p in watts w is equal to the voltage v in volts v times the current i in amps a.

Note that energy charge is multiplied by charge time to give energy time. Voltage on the other hand is the electric potential of that charge in joules per coulomb current and voltage are related to resistance by ohm s law which states that voltage is equal to. What is power consumption in watts when the power factor is 0 8 and the phase current is 3a and rms voltage supply is 110v. Why voltage times current equals wattage.

Watt pf amp volt. Ohm s law states that the current through a conductor between two points is directly proportional to the voltage across the two points. In electrical engineering there is a basic equation that explains how voltage current and resistance relate. It is not currently accepting answers.

W pf a v. That is when the circuit is resistive. Closed ask question asked 3 years 11 months ago. Current is defined as the amount of charge that flows through a conductor in a certain amount of time.

The voltage v in volts v is equal to the current i in amps a times the resistance r in ohms ω. P v i. Viewed 6k times 4 begingroup closed. Cast in these terms current is the rate of electric charge motion through a conductor.

Introducing the constant of proportionality the resistance one arrives at the usual mathematical equation that describes this relationship. V i x r. This equation written below is known as ohm s law. The power p is equal to power factor of 0 8 times current of 3 amps times voltage of 110 volts.

At any one point in time t in alternating current ac circuitry power p t equals voltage v t times current i t. It so happens that the unit for current flow the amp is equal to 1 coulomb of charge passing by a given point in a circuit in 1 second of time. P t v t i t at any one time t.