In general, multiply the (rms) current by the (rms) voltage to get the power.
If the voltage to the appliance is 120 Volts, then the power of 4.2 Amps is 504 Watts. If the voltage is 240 Volts, then 1008 Watts.
Note: To be technically accurate, you must also multiply the cosine of the phase-angle between current and voltage. For any typical appliance, this is 1 and can be ignored.
<<>>
There are zero watts in 4.2 amps. Watts = Amps x Volts. Without a voltage stated the wattage can not be calculated.
The formula you are looking for is I = W/E. Amps = Watts/Volts.
There are zero amps in 50 watts. The equation for amperage is, I W/E. Amps = Watts / Volts. As you can see if there is no voltage stated the amperage can not be calculated.
978 watts
There is zero watts in 10.5 amps. Watts is the product of amps times volts. Without the voltage value given, this question can not be answered.
There are zero watts for 4000 amps. The formula for watts is; W = A x V, so you see a value for voltage has to be stated to give an answer.
Power (Watts) = Current X VoltageSo 7 X 240 = 16801680w
"Power (/Watts) = Current (/amps) * Potential Difference (/volts)" Therefore, power = 7 * 12 = 84 W
The estimated watts of a vacuum cleaner needed is 7 to 12 amps or 144 watts.
watts = volts * amps--> Amps = watts/ volts therefore; 2000/220= 9.09 amps
There are zero watts in 730 amps. Watts is the product of amps times volts. As you can see without a voltage no answer can be given.
Amps, volts and watts are interrelated, but you need to do a little math. Amps * Volts = Watts
How many Amps is the fridge pulling? Multiply the Amps by the 120V circuit you're plugging into and you'll get your Watts.
I t depends. Watts = Amps times volts. 40 amps x 120 volts =4800 watts or 40 Amps x 12 volts = 480 watts.
There is zero watts in 10 amps.
You need the formula: Amps * Volts = Watts But you get to do the math.
41.666 amps. Divide watts by volts.
The formula you are looking for is I = W/E. Amps = Watts/Volts.