Power Voltage Current Resistance Equations

Power voltage current resistance p v i r calculator.

Power voltage current resistance equations. V 10 ma x 15 kω. V 150 v. How to calculate power. Ohm unit of resistance one ohm is the resistance offered to the passage of one ampere when impelled by one volt.

Introducing the constant of proportionality the resistance one arrives at the usual mathematical equation that describes this relationship. So for this analogy remember. We ve seen the formula for determining the power in an electric circuit. Voltage is represented in equations and schematics by the letter v.

How to use ohm s law to determine current. In this analogy charge is represented by the water amount voltage is represented by the water pressure and current is represented by the water flow. When describing voltage current and resistance a common analogy is a water tank. Volt unit of electrical potential or motive force potential is required to send one ampere of current through one ohm of resistance.

Power p voltage v current i. Ampere units of current one ampere is the current which one volt can send. 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. Voltage volts current amps x resistance ω.

Where i is the current through the conductor in units of amperes v is the voltage measured across the conductor in. Common electrical units used in formulas and equations are. Ohm s law states that the current through a conductor between two points is directly proportional to the voltage across the two points. The above calculator will help you to calculate the power using a simple power formula.

But we have designed this one especially for dc circuits as well as work for single phase ac circuits without power factor. If voltage and current are given then you can easily calculate the value of the power.