I am very confused of following sentences:

1.He is gone.
2.He has gone.

OR
.
1.You are finished
2.You have finished.

OR

1.He is done.
2.He has done.

OR

1.I am obliged.
2.I have obliged.

I know that the 1 No. sentences are in Active voice & 2 are in passive voice.
but Is the meaning of these two sentences different?
when i am making such type of sentences i am always confused.

Please can you give me some examples?