AC Flow

[bejoyengineer]

I know what i am going to ask is really a silly question but kindly co operate.
say a television is connected to a single phase source( say 110 Volt).
so now we have two wires - one wire from the phase of the power supply connecting to the TV and the other wire is the return wire(or neutral wire) that is connected back to the neutral of the power supply.

1. does this return wire have any voltage?
2. does this return wire have any Current?

when it comes to a transformer with three phase and neutral - we say that the neutral should be zero when the three phases are balanced.
so supposing that the transformer is connected to a single phase load and only one phase and neutral is used for the load. in that case

1. does this neutral wire have any voltage?
2. does this neutral wire have any Current?

*********************relay*******************************

 

[480sparky]

Yes.
Yes.
Yes.
Yes.

 

[charlie b]

I agree (4 times).

To complete the story, the voltage dropped in the neutral will be on the order of 1 or 2 percent of the nominal voltage (e.g., 2% of 120 volts, or about 2.4 volts). Also, for the two circumstances you described, the current flowing in the neutral is 100% of the value flowing in the other (hot, or ungrounded, or phase) wire.

 

[BigDon]

Google Kirchhoff's Voltage Law and Kirchhoff's Current Law to answer your first two questions, respectively.

 

[LarryFine]

I'd like to add:

1. Voltage relative to what? Voltage is measured between two points.
2. Yes, the current in both conductors is the 'same' current, so they'll match (unless there is current leaking to ground in the load.)

1. Same question. (I'm asking to get you to continue the discussion.)
2. Same answer as above.