If you use 'polarity' in the sense of electric charge, no, it does not. Voltage is simply another word for potential difference and potential difference doesn't have an electric charge. Potential, on the other hand does, but its charge polarity depends on from where it is being measured.
If you use 'polarity' in the sense of direction, then, yes, it does. You can allocate direction to a voltage.
When it's in a closed circuit, then you'd see the polarity reverse throughout the circuit.
But if you were to measure on an empty outlet, you'd only see the reverse going on at the wire that's carrying the phase(the "hot" wire.)
no, ac current is bi-directional and dc current flows posative to negative
A polarized plug can only fit together in one direction. This is to prevent reverse polarity in the device you are plugging in.
If you have 100 amp wire, you can use it for a 60 amp circuit, or for any circuit of 100 amps or less. But if you have a 60 amp circuit, 60 amp wire is thinner and cheaper than 100 amp wire.
One
The live wire
No current will flow though a circuit which is broken.
Hook up a meter to either the lock wire or unlock wire, press the lock button and the the unlock button. you will see the meter go to 12v on 1 press and open circuit on the other. if its just 12v and ground, then its positive polarity door locks.
Reverse polarity means that the direction of an energy flow is opposite of normal. In house wiring, it would mean that the hot wire (in the US, the black wire) was crossed with theneutral wire (in the US, white wire). Appliances would still function, but the flow of current is reversed (and unsafe)
Don't know exactly what you are asking. Most MIG welders can be used for flux cored, or bare wire. Polarity doesn't change, same for both. incorrect bare wire with gas and flux cored run different polarity i think what hes asking is how do you change polarity if there is no switch and the answer is usually on most welders in the wire spool compartment there are 2 lugs one with a ground wire and the other with a jumper wire to the wire feeds drive roll assembly. to switch the polariy just reverse the connections on the lugs.
The magnetic field reverses polarity. North becomes South.
A polarized plug can only fit together in one direction. This is to prevent reverse polarity in the device you are plugging in.
If it is a factory doorlock system you want to keep using a two wire because the locks work off of reverse polarity
Yes, just reverse the start winding circuit.
In a normal distribution system, one wire is always connected to earth. Reverse polarity occurs when the live and neutral conductors on a system become reversed or 'swapped over'. It's a very dangerous situation with serious safety implications.
Ammeters are added in series to the circuit to be monitored.
reversed polarity in an electric circuit, means whoever was doing the wiring had no knowledge of wiring. reversed polarity means that wires ( mostly on outlets) are incorrect. the black wire goes on the gold screw, the white goes on the silver one & the bare wire goes on the green screw. most home centers have a library of how to books. they average around $20.00 each.
Sure. In a two-wire circuit, both wires carry equal currents.
it will cause a Short Circuit