Resistance Current Voltage Equation

If a current i should flow through a resistor r the voltage v can be calculated.

Resistance current voltage equation. 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. Ohm expressed his discovery in the form of a simple equation describing how voltage current and resistance interrelate. First version of the voltage formula. The voltage v in volts v is equal to the power p in watts w divided by the current i in amps a.

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. Voltage is represented in equations and schematics by the letter v. Where i is the current through the conductor in units of amperes v is the voltage measured across the conductor in. In this algebraic expression voltage e is equal to current i multiplied by resistance r.

The resistance r in ohms ω is equal to the voltage v in volts v divided by the current i in amps a. V i r. Introducing the constant of proportionality the resistance one arrives at the usual mathematical equation that describes this relationship. Ohm s law can be rewritten in three ways for calculating current resistance and voltage.

Power voltage current resistance p v i r calculator. When current and resistance are known you can easily find out the voltage using a simple voltage formula. If there is a voltage v across a resistor r a current i flows through it. P i v.

The voltage v in volts v is equal to the current i in amps a times the resistance r in ohms ω. But we have designed this one especially for dc circuits as well as work for single phase ac circuits without power factor. So for this analogy remember. The current i in amps a is equal to the square root of the power p in watts w divided by the resistance r in ohms ω.

I can be calculated. Since the current is set by the values of the voltage and resistance the ohm s law formula can show that. Ohm s law equation formula. Ohm s law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

Influare international ampere or intensity and r resistance. V i r and the power law equation formula. V voltage electric potential difference δ v or e electromotive force emf voltage. This equation called ohm s law shows the.

Voltage v current i x resistance r v volts i amps x r ω for example. Using algebra techniques we can manipulate this equation into two variations solving for i and for r respectively. If we increase the resistance the current will reduce. The resistance of an electrical component can be found by measuring the electric current flowing through it and the potential difference across it.

Find the voltage applied across 15 kω resistors when 10 ma current flows. The above ohm s law calculator is reliable to do so. The nominal impedance z 4 8 and 16 ohms loudspeakers is often assumed as resistance r.