Voltage Current And Resistance

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 current and resistance. Where i is the current through the conductor in units of amperes v is the voltage measured across the conductor in. Current voltage and resistance. The voltage is equivalent to the water pressure the current is equivalent to the flow rate and the resistance is like the pipe size. Power voltage current resistance p v i r calculator.

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. A potential difference voltage across an electrical component is needed to make a current flow through it. The power p in watts w is equal to the voltage v in volts v times the current i in amps a.

Voltage is represented in equations and schematics by the letter v. This means that if the voltage is high the current is high and if the voltage is low the current is low. So for this analogy remember. In a linear circuit of fixed resistance if we increase the voltage the current goes up and similarly if we decrease the voltage the current goes down.

The relationship between voltage current and resistance forms the basis of ohm s law. The amount of current in a circuit depends on the amount of voltage and the amount of resistance in the circuit to oppose current flow. V v i a r ω. A potential difference voltage across an electrical component is needed to make a current flow through it.

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. Current is the rate of flow of electric charge. Current is the rate of flow of electric charge. Ohm s law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

When describing voltage current and resistance a common analogy is a water tank. For this reason the quantities of voltage and resistance are often stated as being between or across two points in a circuit. Introducing the constant of proportionality the resistance one arrives at the usual mathematical equation that describes this relationship.