How many watts does it take to run 5 amps?

Answer 1

Depends on the resistance of whatever you're trying to run the current through. This is given by P=(I^2)*R

Where P is the power in Watts, I is the current in Amps and R is the resistance in Ohms.

For more info go here:

http://en.wikipedia.org/wiki/Electric_power

Answer 2

385

Clarification:You need to specify voltage AND AMPS to know the watts.

As such, the above answer is irrelevant.

At 12 volts, 3.5 amps would be 42 Watts

At 110 Volts, 3.5 amps would be 385 Watts

At 120 Volts, 3.5 amps would be 420 Watts

At 240 Volts, 3.5 amps would be 840 Watts

The general formula is: Amps * Volts = Watts

Answer 3

there are 60million amps in just a single volt! could you imagine!

You need a second variable to work your amperes out

To find the Voltage, ( V )

[ V = I x R ] V (volts) = I (amps) x R (Ω)

To find the Current, ( I )

[ I = V ÷ R ] I (amps) = V (volts) ÷ R (Ω)

To find the Resistance, ( R )

[ R = V ÷ I ] R (Ω) = V (volts) ÷ I (amps)

i.e 5 Volts and 1k (1000) ohm resistor

5/1000 = 0.005 amps, = 5 mA

Jules

Answer 4

Watts are Amperage multiplied by Voltage. You need to tell me what voltage you're using to power whatever is drawing the 3.3 Amps.

Are you using 120 Volts? 240 volts? 347 volts?

to figure out Watts take the Amps and multiply by the voltage, I'm going to use the 120 volts for this example:

120volts x 3.3Amps = 396 Watts

240Volts x 3.3 Amps = 792 Watts and so on.

Answer 5

It depends on the voltage there is; e.g. V = 12 volts (car battery). Formula: Power P = voltage V times amperage A. So, power P = 12 volts times 5.3 amps = 63,6 watts. Cheers ebs

Answer 6

The formula you are looking for is W = A x V.

Answer 7

To calculate the watts, you can use the formula: Watts = Amps x Volts. If you assume a standard voltage of 120 volts in the calculation, running 5 amps would require 600 watts (5 amps x 120 volts).

Answer 8

There are zero watts in 4.2 amps.