The tip of the calling plug will also be at zero potential in making this test, because it is connected to ground through the tip side of the calling-plug circuit and one winding of the cord-circuit repeating coil.
Obviously, when the line is not switched, the test rings are at zero potential on account of a ground through the cut-off relay.
The busy test depends on all of the test rings being at zero potential on an idle line and at a higher potential on a busy line.
On the other hand, if we use a still smaller voltage of B-battery we get a characteristic which shows a still smaller current when the grid is at zero potential.
Now the condenser discharges, sending electrons through the coil cd and making the grid less positive until finally it is at zero potential, that is neither positive nor negative.
We say, then, that the grid is uncharged or is at "zero potential," meaning that it is zero or nothing in possibility.
Bodies at the same potential as the earth, or at zero potential, are also said to be neutral.
When V is constant over the direct surface, while r has different values for different directions of OQ, the different points of the inverse surface may be brought to zero potential by placing at O a charge －aV.
If this be under the influence of the charge q at P alone, a charge is induced upon it which, in presence of P, maintains it at zero potential.
Thus the charge －qa⧸f, at the internal point P' will in presence of +q at P keep all points of the spherical surface at zero potential.
PO, shown in section, connected to earth and therefore at zero potential.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "zero potential" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
