motors generate friction = loss of available power
wires have resistance -= loss of available power
So power from battery is less than power you get back from motor
And I would just love to see how the same motor could take power and generate it at the same time.
In theory you could put some of the power back into the battery but not all of it, that would be free energy and no scientist has managed it yet. You can use power from a source to run a motor and then use justice energy to recharge the power source though but eventually the battery will empty
There are loses at each stage, so no. The thing you probably don't realize is that a turning motor with a load presents itself as an electrical resistance ie it dissipates power. And similarly, if you use a turning shaft to generate electrical power (charging), this presents itself as a mechanical load ie the shaft becomes harder to turn.
One thing that every child should do is turn round an electrically unconnected dynamo by hand, and then connect up a light bulb. What you discover is that it instantly goes from easy to being hard work. You are doing as much work to lift the electrons up in voltage as if you were lifting up weights taking the same power.
No, there are heat losses in the motor and in the generator so the battery will gradually go flat.
There are some systems that use the "back emf" , a voltage spike when current stops flowing in an electromagnet, , which appear to be able to generate more energy out than energy in.
No, all energy conversion devices like motors and generators are less than 100% efficient.
a machine that powers it's self under it's own power is called a perpetual motion machine.
nearly all attempts to make them work have failed.
in your case, a motor to a generator making enough power to power it's self, with current technology motors couldn't produce enough power to turn a generator or any kind of power generator to efficiently enough to power it and provide infinite power.
NO, there are too many losses and if it where, don't you think we would already be using it?
Can someone answer my physics question? It's very urgent.
is it possible to connect a battery to a motor (e.g d-cell battery to a small electric motor) and then use the motor to charge the same battery its drawing power from, to cause a loop that doesnt require the input of power as it supplies its own power?
in short battery --> motor --> battery --> motor
