Power Voltage Current

But we have designed this one especially for dc circuits as well as work for single phase ac circuits without power factor.

Power voltage current. Power voltage current resistance p v i r calculator. How to use ohm s law to determine current. 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. Voltage is represented in equations and schematics by the letter v.

By multiplying the voltage in volts by the current in amps we arrive at an answer in watts let s apply this to a circuit example. The watts equation for an electrical circuit takes into account the voltage across the circuit v measured in volts and the current i measured in amps passing through it in mechanics the definition of power is the rate of doing work w it s defined as w t where t is the time it takes for the work to be completed. When describing voltage current and resistance a common analogy is a water tank. In the above circuit we know we have a battery voltage of 18 volts and a lamp resistance of 3 ω.

These include the quantities current voltage and power. 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. To get the result in watts work must be expressed in joules and time must. 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. Current voltage and power. Learn the power formula.