0
Power = Voltage*Current. Multiply the current and the voltage. Keep your units in mind. If your voltage is Volts, and your current is in Amps, your power will be in Watts. If you are using milliamps, your power will be in milliwatts. You can also use P=I2*R. The current squared, mulitplied by the resistance of the circuit. Or P=V2/R, the voltage squared divided by the resistance of the circuit. The last two of these can be derived from the basic equation V=I*R and P=V*I. Here's a little helper for you too. "Twinkle twinkle little star, power equals I squared R".
Still curious? Ask our experts.
Chat with our AI personalities
Fran
Jordan
ReneAdd your answer:
Earn +20 pts
Rate at which electrical energy is converted to another type of energy?
The rate at which an appliance takes energy from the electrical outlet and spinsthe electric meter is the "power" shown on the data label, usually on the backor the bottom of the appliance.The rate at which it actually converts the energy into the form required to do itsjob is also a "power" figure. This one is always less than the power taken fromthe wall outlet, and is not always stated or marked on the appliance.A couple of cases where it is clearly stated:-- Microwave Oven: " 600 Watts of Cooking Power "The microwave oven is using perhaps 1,500 to 2,000 watts from the electric company,converting some of it into radio waves (with less than 100% efficiency), and delivering600 watts of microwave radiation to the cooking chamber.-- Blow Drier: " 1,250 Watts of Drying Power "The blow drier is using perhaps 1,500 watts from the electric company, anddelivering useful energy at the rate of 1,250 watts, in form of a hot coil anda strong little fan motor to blow air across the coil.But on an electric stove, furnace, blender, food processor, fan, telephone, TV,computer, vacuum, washer, dryer, etc., you can find the power consumptionmarked somewhere on it, but it's not clear exactly where that power goes.
How many amps does 6000 watts pull?
There are zero amps in 6600 watts. Watts are the product of amps times volts. W = A x V. To find amperage use the following equation, A = W/V, so as you can see a voltage value is needed in the equation to result in an amperage.
How do you protect two power in one circuit?
If the question means "two loads in one circuit" then the load currents have to be added together. The breaker that protects the circuit is sized for the total loading of the circuit. These two loads of course will be in parallel with each other. Find the wattage of the two loads if the amperage is not available. The equation is W = A x V. Watts = Amps x Volts. Once the total amperage of the circuit is found select the correct wire size for that amperage. The breaker protects the wire size so then select the proper breaker for that wire size.
How do circuit breaker keep the wires in a electrical circuit from overheating?
A circuit breaker is designed to 'break' in a circuit if a short circuit (or other malfunction) occurs. This prevents overheating (or burn-out) of the circuit wires. In older systems, you would need to find which fuse wire has fused and replace it. In a circuit breaker, once the fault has been found and corrected, the breaker is simply switched back on.
How can you determine how much power a circuit will generate if you know the voltage and resistance?
Ohms law provides the formula to determine any of the three components in a circuit voltage=E Resistance=R and Current=I so with any two you can figure out the third:I=E/RE=IxRR=E/ISo to find I use I=E/R so you divide the resistance into the voltage and you have the current(in amps) or power.Power can be found using the equation: power = (voltage)2 / resistance.The Equation is PIE where P is power in watts. I is current in amps. E is voltage in volts. P equals I times E. 240 watts is created with 120 volts and 2 amps of current
