2007-05-04 10:22:17 · 7 answers · asked by gary p 1 in Science & Mathematics ➔ Physics
Who says they do?
2007-05-04 10:26:28 · answer #1 · answered by Frank N 7 · 0⤊ 0⤋
They don't, really. Perhaps you are thinking of the voltage. Generally, DC motors use a lower voltage than AC motors. This is due to the physical properties of electricity and how we transport electricity around a city.
The energy used by a motor does not depend on whether the electricity is AC or DC. But the type of electricity, AC or DC, determines how the motor works.
2007-05-04 17:31:02 · answer #2 · answered by gizmeaux1 2 · 1⤊ 1⤋
They don't. The power consumption of a motor is determined by the power output and by the efficiency; most motors have high efficiency which does not vary much.
2007-05-04 17:25:49 · answer #3 · answered by Anonymous · 0⤊ 0⤋
energy = VIt
V= electricity
2007-05-04 19:54:50 · answer #4 · answered by yukaina hito 2 · 0⤊ 1⤋
the exray,use's and lites , the nexed time you at the doctor's office tacke a look arund enthaing that is on or pluged in is being used.
2007-05-04 17:32:49 · answer #5 · answered by iesha h 1 · 0⤊ 2⤋
They don't. THey have about the same efficiency
2007-05-04 17:27:41 · answer #6 · answered by R.D.W. 2 · 0⤊ 0⤋
Go back to class....
2007-05-04 17:39:57 · answer #7 · answered by dikhead 3 · 0⤊ 2⤋