If you have a clock motor, and you want to find out how many milliamps it is. How could you derive it from the known variables = motor is 120 volts/at 60 hertz, 4 watts / 5 revolutions per minutes/ and (cw/ccw) "whatever that means",and is there an equation to do it?
2007-02-03 20:29:35 · 3 answers · asked by gimelessdanger 4 in Science & Mathematics ➔ Engineering
You cannot work it out from the information you have. Power does not equal volts times amps in alternating current. The current will be higher than the result given by the answerer above and below
I suggest everyone look up "power factor" before incorrectly answering this question.
You could put power to it and measure it if you really need to know.
2007-02-04 01:02:00 · answer #1 · answered by Poor one 6 · 0⤊ 0⤋
Power = Volts X Amps
Amps = Power / Volts
Amps = 4 / 120
Amps = 33mA
2007-02-04 04:58:57 · answer #2 · answered by Roy E 4 · 0⤊ 0⤋
Yes there is an equation for this and it is I which is amps equalls P which is watts divided by E which is volts and this will give you answer.which would be 4 watts divided by 12o volts which equalls .0033 amps or 3.3 mA
2007-02-04 09:16:08 · answer #3 · answered by Ernest B 2 · 0⤊ 0⤋