Power Voltage Current Relation

Voltage also called electromotive force is the potential difference in charge between two points in an electrical field.

Power voltage current relation. Now we re starting to see the relationship between voltage and current. But there is a third factor to be considered here. The width of the hose. Let s say you have a system with a 6 volt light bulb hooked up to a 6 volt battery the power output of the light bulb is 100 watts.

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. This is analogous to an increase in voltage that causes an increase in current. The best analogy is a garden hose. Think of power as total volume of water being pumped into a bucket.

The faster the water is flowing higher the pressure can be equated to voltage. By the same token if the resistance of the resistor does not change then if the voltage drops in value decreases the current also decreases. Power is measured in joule per second j s and the unit for power is watt the power of 1 watt means that 1 joule of electrical energy is being dissipated or released in every second. 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.

A or amps or amperage. Electric power is the rate per unit time at which electrical energy is transferred by an electric circuit the si unit of power is the watt one joule per second. In an electrical system increasing either the current or the voltage will result in higher power. In other words voltage is the energy per unit charge.

That is if the voltage doubles the current doubles too. Power p voltage v current i that law describes the relationship between power voltage and current in a conductor it means that if you measure the current flowing in the conductor and you measure the voltage difference from one end of the conductor to the other at the same instant then the product of voltage and current will be the rate at which heat is generated in the conductor at. Think of voltage as the flow rate or speed of the water. This increases the pressure voltage at the end of the narrower hose pushing more water through the tank.

The relationship between the voltage across a resistor and the current through that resistor is linear. Current is the effect voltage being the cause. Relationship between energy transferred current voltage and time problems with solutions. Current cannot flow without voltage.