Calculating Power Using Current And Voltage

The power p in watts w is equal to the voltage v in volts v times the current i in amps a.

Calculating power using current and voltage. 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 10 ma x 15 kω. The above calculator will help you to calculate the power using a simple power formula. Learn the power formula.

In this calculator table you may enter two of the four factors in ohm s law. The power p in watts w is equal to the squared voltage v in volts v divided by the resistance r in ohms ω. The most important three phase power equations relate power p in watts to current i in amps and depend on the voltage v there is also a power factor pf in the equation that takes account for the difference between the real power which performs useful work and the apparent power which is supplied to the circuit most types of three phase power calculations are performed. But we have designed this one especially for dc circuits as well as work for single phase ac circuits without power factor.

Voltage calculator is also used in electrical engineering to measure the unknown voltage by two known quantities kva and current applied to the below formulas. This page shows the online ac power calculator to calculate the ac current in a circuit for the given power factor angle voltage current etc. Power p voltage v current i. How to use ohm s law to determine current.

We ve seen the formula for determining the power in an electric circuit. In direct current the electric charge flows in only one direction. Voltage volts current amps x resistance ω. V 150 v.

How to calculate power. Supports amps miliamps watts kilowatts megawatts volts millivolts and kilovolts ohms kiloohms and megaohms. If voltage and current are given then you can easily calculate the value of the power. Power voltage current resistance p v i r calculator.

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 voltage v in volts v is equal to the square root of the power p in watts w times the resistance r in ohms ω. Enter any two parameters to calculate the other two. Use this ohm s law calculator to easily calculate the power resistance voltage or electrical current based on two known parameters.

Whereas in alternating current electric charge in alternating current changes direction periodically. In the above circuit we know we have a battery voltage of 18 volts and a lamp resistance of 3 ω. Power within an electrical circuit is only present when both voltage and current are present.