how much power is dissipated in the circuit?
12731
To find out, we need to be able to calculate the amount of power that the resistor will dissipate. If a current I flows through through a given element in your circuit, losing voltage V in the process, then the power dissipated by that circuit element is the product of that current and voltage: P = I × V.
346009
Consumption is really not a good term to use for power, but it probably refers to the power input to the device under consideration. Power dissipated probably refers to the losses associated with the device that are usually dissipated as heat. The output power of the device is transferred elsewhere in some useful form.
134026
Common household circuits in the USA can handle 15 amps, so that's 15 amps * 120 volts = 1800 watts, for a few minutes at least. Note that the home circuit may be wired to multiple outlets an... To determine power in Watts, simply multiply Volts times the current in Amps. The 60 Hz doesn't matter.
1168340
Locate the circuit for which you want to calculate the circuit load. Take the breaker size and multiply it by the rated voltage. For example, a 20 amp breaker that operates at 120 volts has a maximum load of 2400 watts.
812690
It is very simple. The 10 ohms resistor connected across a 12 volts battery dissipates the power of 1.44 A² X 10 ohm = 14.4 watts. When an additional 30 ohms is added in series to the existing 10 ohms the power dissipated will be equal to 144 v²/40 ohms = 14.4 watts/4 = 3.6 watts.
306435
So the power dissipated by the 5 ohm resistor is P = I^2 R = (3 amps)^2 * (5 ohms) = 45 watts. Feel free to make any corrections.
1116212
Watts are the power - what is needed to run a device. Amperage/current is how fast it flows and voltage is like the supply. By the data provided, it appears that the DC fridge requires less power to run than the AC fridge. The power consumed by the same device is the same, just the voltage and amperage changes.
1464148
The current is equal to the electromotive force of the source divided by the total circuit resistance. Power. Power (P) is a measure of the rate at which energy is delivered or used by a circuit element. Voltage sources deliver power, while resistors use power (by dissipating it as heat).
234764
Zero watt bulbs consume 12-15 watts of power. However, in older days, when all the appliances were turned off and only the zero watt bulb was kept on, the 'not so sophisticated' electromagnetic meter could not measure power of such less magnitude.
514512
So if you leave it on for 10 hours, it consumes 2 kilowatt-hours. That would cost between 15 and 30 cents, depending on your location. Many appliances tell you their energy consumption.
269463
De hoeveelheid vermogen die je ermee kunt ontwikkelen is afhankelijk van de spanning: Volt x Ampere = Watt. Voor het opladen van een mobieltje is een stroom van 0,5 - 1 A nodig bij een spanning van 5 V, dus ongeveer 2,5 - 5 Watt. Een föhn is ongeveer 500 W, maar aangesloten op 230 V trekt hij maar 500/230=2,2 A.
944380
The formula for electrical power is P = I \times E. "Power (in watts) equals Current (in amperes) multiplied by Potential Energy (in volts)." How much power is being used in a circuit when the applied voltage is 12 volts DC and the current is 2.5 amperes?
90962
In terms of current and voltage it is P=IV. The energy used is the amount of charge q moved through voltage V in a time interval t. It is equal to the integral of power over time.
1062646
Most modern residential circuits are 15 or 20 amps, so we're looking at a max load of either (15A x 120V =) 1800 watts or (20A x 120V =) 2400 watts before the breaker trips.
397867
A fully charged cell phone plugged into the wall is consuming about 2.24 watts, or 60 percent of the power it consumed while charging. Even worse is a charged laptop that's still plugged in, which consumes 29.48 watts, 66 percent of the 44.28 watts consumed while charging.
471326
The power dissipated in a resistor is given by P = V2/R which means power decreases if resistance increases. Yet this power is also given by P = I2R, which means power increases if resistance increases.
366646
40-amp 240-volt circuit: 40 amps x 240 volts = 9,600 watts.