The answer is that it is constant. The relation between electric field and electric potential is given as, E= -gradient (V). The E, the partial rate of change of Electric potential, in the equation implies that the V, the partial differential of the potential of the three-dimensional space (assuming it is considered) is constant.
I have no idea I am sorry someone will help you soon
That's called 'parallax'.
To see it happen, go outside, hold your arm straight out in front
of your face and stick your thumb up. Close one eye, and notice
where your thumb appears against the houses across the street.
Now, don't move your arm, but just close the first eye and open
the other one. You'll see your thumb jump in front of a different
house. The angle that your thumb appeared to move is its parallax.