NPN transistor circuit confusion
Both circuits are same. I mean the whole effect produced will be same

Firstly, it is meaningless to talk about just voltage. It is a relative quantity. 

Let me tell in some other context. The statement "I am moving at 10Km/hr w.r.t to the cycle behind me" has more and clear information than saying "I am moving at 10Km/hr". Of course, in the later statement, the speaker is moving at 10Km/hr w.r.t the road.  The phrase "w.r.t the road" is hidden here and is understood without explaining explicitly. 

If you have two points say A and B on a circuit(any two points), it is meaningless to talk about potential of point A. Instead it must be "potential of point A w.r.t point x is .......". Remember potential difference matters and not just potential. You use two terminals of a voltmeter to find voltage across a device. Not just one terminal.

Note: In all the cases where one says just "Potential of point A is ......", he/she means potential of that point A w.r.t another point in the circuit which as fixed voltage zero(GND). Just like how "w.r.t the road" is hidden in the previous case.

So if you take a battery of 1V, it means that, the negative terminal is at potential 'x' Volts(some random value - we haven't defined our reference)and the positive terminal is at 'x+1" Volts. So on the whole, the battery is {(x+1)-x}=1V.

One necessary point for a BJT to conduct is that potential difference across Base-Emitter (Vb-Ve >0.7 V for Silicon) must be more than 0.7V. 

1) As long as VEE>0.7V in first circuit and VB>0.7V in second circuit, the BE junction will be forward biased.

2) Refer 1)

3) Yeah both are same