Voltage Resistance Current

Calculation of ohms law.

Voltage resistance current. A basic electrical engineering equation called ohm s law spells out how the three terms relate. When describing voltage current and resistance a common analogy is a water tank. Current voltage and resistance current is the rate of flow of electric charge. Current voltage and resistance current is the rate of flow of electric charge.

Ohm s law can be represented in three forms. An ohm law calculator is also referred to as a resistance calculator as it helps you to calculate resistance. Power voltage current resistance p v i r calculator. The two known values may be either voltage current or 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. So for this analogy remember. For this reason the quantities of voltage and resistance are often stated as being between or across two points in a circuit. 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.

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. 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. Just like voltage resistance is a quantity relative between two points. Where i is the current through the conductor in units of amperes v is the voltage measured across the conductor in.

Introducing the constant of proportionality the resistance one arrives at the usual mathematical equation that describes this relationship. A potential difference voltage across an electrical component is needed to make a current flow through it. The amount of resistance a resistor has is determined by the relationship of the current through it to the voltage across it which determines whether the circuit element is a good conductor low resistance or a bad conductor high resistance. When a voltage v and current i are given you can find out resistance using a simple formula for resistant.

Resistance r voltage v current i r ω v volts i amps for example. But we have designed this one especially for dc circuits as well as work for single phase ac circuits without power factor. Ohm s law states that the current through a conductor between two points is directly proportional to the voltage across the two points.