Current Power Resistance Formula

When voltage and current are known use r v i to calculate the value of the resistor.

Current power resistance formula. How to calculate power. The power p in watts w is equal to the voltage v in volts v times the current i in amps a. Resistance refers to the amount that an object impedes or resists in an electric current. Power voltage current resistance p v i r calculator.

The above calculator will help you to calculate the power using a simple power formula. Voltage volts current amps x resistance ω. This article discusses resistance along with the resistance formula and its derivation. The power used or dissipated by a resistor can be found using the formula v ir.

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 10 ma x 15 kω. Power and resistance formula deriving power and resistance formula will concrete the understanding of the concept. Power p voltage v current i.

The voltage v in volts v is equal to the current i in amps a times the resistance r in ohms ω. Electric current refers to the flow of electrons. V 150 v. R 30 5ma 2 1 2 mω.

When power and current are known use r p i 2 to calculate the resistance. 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. Find the value of unknown resistor which dissipates 30 watts when 5 ma current flows through it. An easier way to explain resistance is to consider an example of a person in a crowded market struggling to go from one shop to another.

V v i a r ω.