Power Current Voltage Relationship

This is analogous to an increase in voltage that causes an increase in current.

Power current voltage relationship. Alternating current voltage sources are available for domestic house and industrial power and lighting as well as power transmission. Current cannot flow without voltage. Direct current voltage source such as 5v 12v 24v etc in electronic circuits and systems. Power within an electrical circuit is only present when both voltage and current are present.

Learners examine three formulas than can be used to find dc power. 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. But there is a third factor to be considered here. 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.

Think of voltage as the flow rate or speed of the water. The width of the hose. Think of power as total volume of water being pumped into a bucket. Voltage is the cause and current is its effect.

Regardless of what the voltage and current waveforms look like and regardless of the phase angle between them instantaneous power instantaneous voltage x instantaneous current when the unit for instantaneous voltage is volts and the unit. The faster the water is flowing higher the pressure can be equated to voltage. For example in an open circuit condition voltage is present but there is no current flow i 0 zero therefore v 0 is 0 so the power dissipated within the circuit must also be 0 likewise if we have a short circuit condition current flow is present but there is no voltage v 0 therefore 0 i 0. Relationship between energy transferred current voltage and time problems with solutions.

Electric power is usually produced by electric generators but can also be supplied by sources such as electric batteries it is usually supplied to businesses and homes as domestic mains electricity by the electric power industry. 1 ampere 1 coulomb second. V or volts or voltage. Current is the effect voltage being the cause.

This increases the pressure voltage at the end of the narrower hose pushing more water through the tank. Now we re starting to see the relationship between voltage and current. The best analogy is a garden hose. Batteries or power supplies are mostly used to produce a steady d c.

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.