Power Voltage Resistance Relationship

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 resistance relationship. The relationship between the voltage across a component the current in the component and the electric resistance exhibited by the component to the flow of electricity. This is known as ohm s law. 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. The relationship between voltage current and resistance in any dc electrical circuit was firstly discovered by the german physicist georg ohm.

Influare international ampere or intensity and r resistance. The first and perhaps most important the relationship between current voltage and resistance is called ohm s law discovered by georg simon ohm and published in his 1827 paper the galvanic circuit investigated mathematically. Hope that this is a better conceptualization than just bouncing formulas around. There is a basic equation in electrical engineering that states how the three terms relate.

P i v. Ohm s law equation formula. Think of power as total volume of water being pumped into a bucket. Voltages are generally expressed in volts with prefixes used to denote sub multiples of the voltage such as microvolts μv 10 6 v millivolts mv 10 3 v or kilovolts kv 10 3 v.

So for this analogy remember. Voltage is measured in volts with one volt being defined as the electrical pressure required to force an electrical current of one ampere through a resistance of one ohm. Voltage sources deliver power while resistors use power by dissipating it as heat. The nominal impedance z 4 8 and 16 ohms loudspeakers is often assumed as resistance r.

One of the most important laws of electric circuits. Power is a dynamic measurement based on the conditions or multiple components amount of electrical current per second amps and differential charge of the conductor voltage. P power i or j latin. Voltage is represented in equations and schematics by the letter v.

When describing voltage current and resistance a common analogy is a water tank. Georg ohm found that at a constant temperature the electrical current flowing through a fixed linear resistance is directly proportional to the voltage applied across it and also inversely proportional to the resistance. The best analogy is a garden hose. Power power p is a measure of the rate at which energy is delivered or used by a circuit element.

The faster the water is flowing higher the pressure can be equated to voltage. The current is equal to the electromotive force of the source divided by the total circuit resistance. V voltage electric potential difference δ v or e electromotive force emf voltage.