Current Voltage Power Definitions

The current is equal to the electromotive force of the source divided by the total circuit resistance.

Current voltage power definitions. Electric power like mechanical power is the rate of doing work measured in watts and represented by the letter p the term wattage is used colloquially to mean electric power in watts the electric power in watts produced by an electric current i consisting of a charge of q coulombs every t seconds passing through an electric potential difference of v is. Google classroom facebook twitter. Electricity is the flow of electric charge we can describe the flow of electric charge in several ways. Current i is the rate of flow of charge carriers such as electrons current is usually thought of as moving in the direction of positive charge so from the positive power supply to the negative.

Power power p is a measure of the rate at which energy is delivered or used by a circuit element. Ohm s law and circuits with resistors. Current voltage and power. Introduction to circuits and ohm s law.

A potential difference voltage across an electrical component is needed to make a current flow through it. Voltage sources deliver power while resistors use power by dissipating it as heat. Equation 3 shows that the product of the instantaneous voltage and current results in the instantaneous power p t if these instantaneous powers multiplied by the infinitely small time dt are continuously summed it will return the energy in the system since t 0 s. These include the quantities current voltage and power.

Written by willy mcallister.