How To Find Voltage With Power And Current

V 150 v.

How to find voltage with power and current. For example the voltage of a battery which is stable over a long period of time will be symbolized with a capital letter e while the voltage peak of a lightning strike at the very instant it hits a power line would most likely be symbolized with a lower case letter e or lower case v to designate that value as being at a single moment in time. Once you have worked out the total resistance and voltage use ohm s law to calculate the total current in the circuit. Ohm s law formulas and ohm s law formula wheel. Calculate the voltage v current i resistance r or power p given two known quantities for the electrical current.

They are power p or w measured in watts voltage v or e measured in volts current or amperage i measured in amps and resistance r measured in ohms. In both series and parallel circuits the total voltage is equal to the sum of the individual voltages. Ohm s law says that the current i v r. Use ohm s law to find the current of the entire circuit.

Once we calculate the current this way we can use it for all our calculations. Power p i v r i 2 v 2 r where power p is in watts voltage v is in volts and current i is in amperes dc. The voltage across the whole circuit is 12 volts and the total resistance is 10 ohms. Free ohm s calculator for electricity.

Electric power is defined as the rate per unit time at which an electric circuit transfers its electrical energy. The needed factor will be calculated for you when you click on the calculate button for that table. Dc power calculator. Calculate the total voltage of the circuit next.

A simple online dc power calculator to find out the power from the given values of voltage and current. Voltage volts current amps x resistance ω. Power formula 1 electrical power equation. Ohm s law calculator online.

The electrical relationships between resistance r current i power p and voltage e is defined by ohm s law. Remember the current is the same anywhere on a series circuit. But we have designed this one especially for dc circuits as well as work for single phase ac circuits without power factor. Find the voltage applied across 15 kω resistors when 10 ma current flows through it.

Explanation of the equations and calculation. One ohm is defined as the resistance which allows the current of one ampere under a potential difference of 1 volt. If there is ac look also at the power factor pf cos φ and φ power factor angle phase angle between voltage and amperage. How to calculate power.

Power voltage current resistance p v i r calculator. V 10 ma x 15 kω.